Consumption and Informal Trade of Milk in the North of Antioquia (Colombia).

The excessive and irrational use of antibiotics to control bovine mastitis and the informal trade in milk with antibiotic residues are objects of great interest for public health, due to the problems associated with the consumption of milk with antibiotic residues on human, animal, and environmental health, and antibiotic resistance. The objective of this study was to understand the attitudes of dairy farmers towards the self-consumption of milk on the farm, the use of milk with antibiotic residues, and the formal and informal milk trade that generates risks for public health. Mixed methods: cross-sectional and grounded theory. Convergent triangulation design. The study was carried out in 9 dairy municipalities in the North of Antioquia, where 216 dairy farmers participated in the quantitative component; and 17 milk producers and 9 veterinarians took part in the qualitative component. A dairy farmer characterization survey was conducted, as well as a survey on the use and marketing of milk from cows with udder health problems and/or under antibiotic treatment. Semistructured interviews were conducted on the same subject. The variable "Intention to sell milk in the village when the dairy industry does not buy it due to high BTSCC" is associated with the BTSCC variable. The variable "Type of marketing reported" is associated with the CFU variable. 5 categories: self-consumption of milk, use of milk with antibiotics, informal milk trade, control of the dairy industry, and beliefs about the elimination of antibiotics in milk, were constructed to theorize about udder health and public health. Sociocultural, political, and economic factors affect decision making in dairy farmers regarding the use and marketing of milk from cows with mastitis and antibiotic residues. These attitudes and behaviors have public health implications.

Trust and reciprocity norms in the analysis of social capital related to udder health. A mixed methods approach with dairy farmers and veterinarians from the north of Antioquia.

Understanding trust between dairy farmers and other actors in the dairy chain, as well as the reciprocity norms among them are fundamental to encouraging collective action and decision-making to improve milk production and udder health. The objective of this study was to understand the relationships of trust between dairy farmers and other actors in the dairy chain related to udder health in the north of Antioquia. Mixed methods (cross-sectional and grounded theory) with a convergent triangulation design were used. A total of 216 dairy farmers participated in the quantitative component, and 17 dairy farmers and 9 veterinarians in the qualitative component, they were located in 9 milk-producing municipalities in the north of Antioquia. A characterization survey of the dairy farmers, a survey on reliability and udder health, an analysis of each farm's annual average BTSCC and CFU, and semi-structured interviews on the same topic were conducted. Problems were found in the biological indicators of udder health on the farms: BTSCC was poor for 67% of the dairy farmers, and CFU was poor for 22% of the dairy farmers. Veterinarians are the actors whom dairy farmers trust the most. Trust in dairy chain actors is complex, variable, and depends on many aspects. Trust representation, Socio-cultural Factors, Economic and Commercial Factors, Labor, Clinical and Laboratory Conditions of Milk, and Norms of Reciprocity constitute the categories of analysis when theorizing about trust and udder health. Each of the theoretical and emerging categories in this study describes actors, attitudes, behaviors, relationships between actors, and norms, allowing us to understand that trust between dairy farmers and other actors in the dairy chain in order to face the problems of udder health and milk production depends on technical processes, individual and collective human attitudes and behaviors, supply of services, political, regulative and economic determinants, the latter being transcendental in decision-making to invest in mastitis control and udder health care.

Detection of Babesia and the associated factors in cattle and humans from Magdalena Medio region, Colombia.

This study aimed to determine the frequency of Babesia spp. infection in cattle, livestock farmers, and patients with acute febrile illness (AFI) from the Magdalena Medio region in Colombia using molecular and serological methods. PCR detected Babesia in 83.9 % (161/192) of cattle and 14.8 % (21/143) of farmers tested. Molecular analysis based on eight DNA sequences from the 18S rRNA identified Babesia bovis and Babesia bigemina in cattle and Babesia bigemina in farmers. There was no molecular detection in the patients with acute febrile illness; nonetheless, the serological test in the AFI population yielded 10.7 % (23/215) seropositivity for Babesia microti. Our findings suggest natural infection by this hemoparasite in this livestock region, and it is, therefore, essential to continue determining the role of this parasite as an etiological agent of diseases in the area, not only because of its veterinary relevance but also because of its zoonotic potential.

Models of spatial analysis for vector-borne diseases studies: A systematic review.

Background and Aim: Vector-borne diseases (VBDs) constitute a global problem for humans and animals. Knowledge related to the spatial distribution of various species of vectors and their relationship with the environment where they develop is essential to understand the current risk of VBDs and for planning surveillance and control strategies in the face of future threats. This study aimed to identify models, variables, and factors that may influence the emergence and resurgence of VBDs and how these factors can affect spatial local and global distribution patterns. Materials and Methods: A systematic review was designed based on identification, screening, selection, and inclusion described in the research protocols according to the preferred reporting items for systematic reviews and meta-analyses guide. A literature search was performed in PubMed, ScienceDirect, Scopus, and SciELO using the following search strategy: Article type Original research, Language: English, Publishing period: 2010-2020, Search terms: Spatial analysis, spatial models, VBDs, climate, ecologic, life cycle, climate variability, vector-borne, vector, zoonoses, species distribution model, and niche model used in different combinations with "AND" and "OR." Results: The complexity of the interactions between climate, biotic/abiotic variables, and non-climate factors vary considerably depending on the type of disease and the particular location. VBDs are among the most studied types of illnesses related to climate and environmental aspects due to their high disease burden, extended presence in tropical and subtropical areas, and high susceptibility to climate and environment variations. Conclusion: It is difficult to generalize our knowledge of VBDs from a geospatial point of view, mainly because every case is inherently independent in variable selection, geographic coverage, and temporal extension. It can be inferred from predictions that as global temperatures increase, so will the potential trend toward extreme events. Consequently, it will become a public health priority to determine the role of climate and environmental variations in the incidence of infectious diseases. Our analysis of the information, as conducted in this work, extends the review beyond individual cases to generate a series of relevant observations applicable to different models.

Udder health, conceptual construct, and uses of the term: A systematic review from 1962 to 2019.

Background and Aim: Udder health management is essential for the further development of milk production systems and public health. This process depends on the generation of knowledge regarding control, prevention, and promotion of health. In scientific literature, it is impossible to find a synthesis of the categories that would allow comprehension of the complex phenomenon udder health. Different research approaches have allowed this polysemic concept, described by some researchers as multifactorial and by philosophical perspectives as a social phenomenon, to be further studied. Thus, the objective of this systematic review was to systematize the conceptual categories of udder health and the use of the term in the original articles published in the scientific literature from the period 1962 to 2019. Materials and Methods: A systematic review with a broad approach was designed by applying the phases of identification, screening, selection, and inclusion criteria described in the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes guide. An exhaustive search of original articles by specificity was carried out in the Science Direct, PubMed, Scielo, LILACS, and Google Scholar databases. The investigation was carried out on November 22, 2019. According to the inclusion criteria established, articles needed to be original studies, to be publications on bovine livestock, written in English, Spanish and Portuguese. Furthermore, the articles considered needed to tackle the term udder health so that its conceptual categorization could be extracted. Google Scholar patents and citations and articles removed from databases or not available were excluded from the study and those that, based on the reading of the complete text, considered the farming of animal species other than bovine. A qualitative synthesis of the year of publication, continent, approach, type of study, and conceptual category of udder health was carried out by calculating frequencies (Statistical Package for the Social Sciences version 24). Results: In total, 165 articles were included in the study. Eight conceptual categories, consolidated over time, were systematized, showing that udder health is not a static problem, and that science has been responding through the generation of new knowledge around conceptual categories as different udder health problems emerge. Conclusion: Culture and politics were two categories, related to all the others, that stood out in the results. These two categories were of great interest in countries advanced in milk production and in the implementation of udder health policies, which acknowledge the producer and other actors of the production chain as fundamental political actors for policies, decision-making processes, and public health care to be effective. The lack of synonyms for the term udder health (e.g., mastitis) may have led to the exclusion of important articles in each category. However, the constriction to the term udder health was intentional and aimed at constructing the concept. Udder health is hereby understood as a health-disease process, different from the term mastitis, which from its semantic origin, refers only to the disease process. According to this study, the concept can be understood through the categories of traditional epidemiology based on risk factors and disease; microbiology; genetics, resistance, and immunity; animal welfare; nutrition; organic production; culture; and politics.

Occupational health and safety in agriculture. A systematic review / Salud y seguridad ocupacional en la agricultura. Revisión sistemática

Abstract Introduction: The prevalence of occupational diseases in the agricultural sector is higher than in other industries, since agricultural workers are at higher risk of exposure to different chemicals and pesticides, and are more prone to occupational accidents. Objective: To conduct a review of recent literature on occupational health and risk in agriculture. Materials and methods: A literature search was conducted in PubMed, SciencieDirect and Scopus using the following search strategy: type of articles: original research papers; publication language: English; publication period: 2006-2016; search terms: "agricultural health", "agrarian health", "risk factors", "epidemiology", "causality" and "occupational", used in different combinations ("AND" and "OR"). Results: The search yielded 350 articles, of which 102 met the inclusion criteria. Moreover, 5 articles were found in grey literature sources and included in the final analysis. Most research on this topic has been conducted in the United States, which produced 91% (97/107) of the articles included in the review. Conclusions: Most studies on agricultural health focused primarily on the harmful effects of occupational exposure to agrochemicals and pesticides, and the consequences of occupational accidents. However, since more than 90% of these studies come from USA, a more comprehensive approach to agricultural health is required, since what is reported here may be far from the reality of other regions, especially Latin America.

Resumen Introducción. En el sector agrícola la prevalencia de enfermedades profesionales es más alta que en otras industrias, ya que los agricultores, debido a las actividades que deben realizar, tienen un mayor riesgo de exposición a diferentes químicos y pesticidas, y son más propensos a sufrir accidentes laborales. Objetivo. Realizar una revisión de la literatura sobre salud y riesgo ocupacional en el sector agrícola. Materiales y métodos. Se realizó una búsqueda de la literatura en PubMed, SciencieDirect y Scopus. Se utilizó la siguiente estrategia de búsqueda: tipo de artículos: investigaciones originales; idioma: inglés; periodo de publicación: 2006-2016; términos de búsqueda: "agricultural health", "agrarian health", "risk factors", "epidemiology", "causality" y "occupational", usados en diferentes combinaciones ("AND" y "OR"). Resultados. La búsqueda arrojó 350 artículos, de los cuales 102 cumplieron los criterios de inclusión. Además, se agregaron 5 artículos encontrados en fuentes de literatura gris. El país en el que más se ha investigado sobre este tema es EE. UU., ya que produjo el 91% (97/107) de los artículos incluidos. Conclusiones. La mayoría de estudios se centró en los efectos de la exposición ocupacional a químicos y pesticidas y las consecuencias de los accidentes laborales; sin embargo, ya que más del 90% de estos proviene de EE. UU., se requiere una discusión más integral sobre la salud en la agricultura, pues lo reportado aquí puede distar mucho de la realidad de otras regiones, especialmente de Latinoamérica.

Molecular detection of Coxiella burnetii in livestock farmers and cattle from Magdalena Medio in Antioquia, Colombia.

Coxiella burnetii causes Q fever in humans and coxiellosis in animals. In humans, it causes acute febrile illnesses like influenza, pneumonia, hepatitis, and chronic illnesses such as endocarditis, vascular infection, and post-infectious fatigue syndrome. It is widely distributed worldwide, and its main reservoirs are sheep, goats, and cattle. This study aimed to determine the frequency of C. burnetii infection using molecular detection and to identify the associated factors in livestock farmers and cattle from the Magdalena Medio region of Antioquia, Colombia. Using real-time polymerase chain reaction (PCR), molecular detection was performed for the IS1111 insertion sequence of C. burnetii using genomic DNA collected from the peripheral blood of 143 livestock farmers and 192 cattle from 24 farms located in Puerto Berrío, Puerto Nare, and Puerto Triunfo. To confirm the results, bidirectional amplicon sequencing of 16S rRNA was performed in four of the positive samples. Additionally, factors associated with C. burnetii were identified using a Poisson regression with cluster effect adjustment. Real-time PCR showed positive results in 25.9% and 19.5% of livestock farmer samples and cattle samples, respectively. For livestock farmers, factors associated with C. burnetii were the area where the farm was located [Puerto Berrío, adjusted prevalence ratio (aPR): 2.13, 95% confidence interval (CI): 1.10-4.11], presence of hens (aPR: 1.47, 95% CI: 1.21-1.79), horses (aPR: 1.61, 95% CI: 1.54-1.67), and ticks (aPR: 2.36, 95% CI: 1.03-5.42) in the residence, and consumption of raw milk (aPR: 1.47, 95% CI: 1.26-1.72). For cattle, the factors associated with Coxiella genus were municipality (Puerto Nare; aPR: 0.39, 95% CI: 0.37-0.41) and time of residence on the farm (≥49 months; aPR: 2.28, 95% CI: 1.03-5.20). By analyzing sequences of the 16S rRNA molecular marker, C. burnetii infection was confirmed in livestock farmers. However, in cattle, only the presence of Coxiella-type bacteria was identified. Further research is necessary to determine the potential role that these types of bacteria have as etiological agents for disease in livestock farmers and cattle from the study area.

Occupational history of exposure to zoonotic agents in people dedicated to livestock in San Pedro de los Milagros, Antioquia, Colombia / Antecedentes ocupacionales de la exposición a agentes zoonóticos en personas dedicadas a la ganadería en San Pedro de los Milagros, Antioquia, Colombia

Abstract Introduction: According to the World Health Organization, livestock farming is one of the anthropic activities in which workers are exposed to various zoonotic agents. Objectives: To establish the frequency of seropositivity (IgG antibodies) against some zoonotic agents in people with occupational exposure to livestock in San Pedro de los Milagros (Antioquia), and to analyze associated factors. Materials and methods: Descriptive study carried out on a population of 328 cattle farmers. Demographic data were collected and the seropositivity frequency of IgG antibodies to Babesia bovis, Babesia bigemina, Anaplasma phagocytophilum, Ehrlichia chaffensis, Borrelia burgdorferi, Coxiella burnetii, Francisella tularensis, Brucella abortus, Brucella suis, Leptospira interrogans, and Toxoplasma gondii was determined. Overall and specific prevalence, prevalence ratios and binary logistic regressions were estimated. Results: The highest seropositivity frequencies were 47.6% for T. gondii, 33.5% for B. burgdorferi and 13% for E. chaffensis. The prevalence of T. gondii and B. burgdorferi had statistical association with sex [RP:1.3 (CI:1.0-1.8) and 2.0 (CI:1.1-3.9) respectively], and age group [(RP:1.5 (CI:1.2-1,9) and 2.5 (CI:1.4-6.4) respectively]. In workers with more than 10 years of related work experience, statistical association was 50% [RP:1.5 (CI:1.2-1.9) and 2.5 (CI:1.6-2.3), respectively]. There were no seropositive results for B. abortus, B. suis, B. bovis and B. bigemina. Conclusions: Exposure to some zoonotic agents was evidenced. This is determinant for the knowledge of tropical zoonotic diseases transmitted by vectors in livestock production systems.

Resumen Introducción. Según la Organización Mundial de la Salud, la ganadería es una actividad antrópica profesional en la que los trabajadores se ven expuestos a diversos agentes zoonóticos. Objetivos. Determinar la frecuencia de seropositividad (anticuerpos IgG) frente a algunos agentes zoonóticos en personas con exposición ocupacional a la ganadería en San Pedro de los Milagros (Antioquia) y analizar los factores asociados. Materiales y métodos. Estudio descriptivo realizado en una población de 328 productores ganaderos. Se recolectaron datos demográficos; se determinó la frecuencia de seropositividad de anticuerpos IgG de Babesia bovis, Babesia bigemina, Anaplasma phagocytophilum, Ehrlichia chaffensis, Borrelia burgdorferi, Coxiella burnetii, Francisella tularensis, Brucella abortus, Brucella suis, Leptospira interrogans y Toxoplasma gondii, y se calcularon prevalencias globales y específicas, razones de prevalencia y regresiones logísticas binarias. Resultados. Las frecuencias más altas de seropositividad fueron 47.6% para T. gondii, 33.5% para B. burgdorferi y 13% para E. chaffensis. Las prevalencias de T. gondii y B. burgdorferi presentaron asociación estadística con el sexo (RP: 1.3 (IC: 1.0-1.8) y 2.0 (IC: 1.1-3.9), respectivamente) y el grupo etario (RP:1.5 (IC: 1.2-1.9) y 2.5 (IC: 1.4-6.4) respectivamente). En trabajadores con más de diez años en la labor la asociación estadística fue de 50% (RP:1.5 (IC:1.2-1.9) y 2.5 (IC:1.6-2.3), respectivamente). No hubo resultados de seropositividad para B. abortus, B. suis, B. bovis y B. bigemina. Conclusiones. Se evidenció exposición a algunos agentes zoonóticos, lo que resulta determinante para el conocimiento de las enfermedades zoonóticas tropicales transmitidas por vectores en la ganadería.

Conocimientos, actitudes y prácticas (CAP) sobre sostenibilidad en estudiantes de una universidad pública colombiana / Knowledge, attitudes, and practices (KAP) in sustainability among students of a colombian university

RESUMEN La educación para el desarrollo sostenible tiene el propósito de generar cambios en los conocimientos, las actitudes y las prácticas de las personas, para promover transiciones hacia la sostenibilidad. Los estudios de Conocimientos Actitudes y Prácticas (CAP) pueden ser una herramienta útil, oportuna y pertinente, para valorar los logros de la educación con orientación ambiental. Este estudio analizó el perfil de CAP sobre Sostenibilidad y sus factores asociados en estudiantes de una universidad pública colombiana, mediante un estudio descriptivo transversal, de 356 estudiantes universitarios. Se encontró que la dimensión con los puntajes más altos fue la de Actitudes, seguida por los Conocimientos y el más bajo para las Prácticas, y asociaciones con el sexo, la edad y el programa de formación al que pertenecen los estudiantes.

ABSTRACT The education for sustainable development aims at generating changes in people's knowledge, attitudes, and practices in order to promote transitions towards sustainability. Studies on Knowledge, Attitudes, and Practices (KAP) may become useful, timely and pertinent tools to assess the accomplishments of environmentally-oriented education. This study analyzed the profile of KAP in Sustainability, together with its associated factors, among students at a public Colombian university by means of a cross-sectional descriptive study which included 356 subjects. It found that attitudes dimension showed the highest scores, followed in decreasing order by knowledge and practices, as well as associations with gender, age, and the undergraduate program the students belong to.

Serological evidence of exposure to some zoonotic microorganisms in cattle and humans with occupational exposure to livestock in Antioquia, Colombia.

Bacteria belonging to Anaplasma, Ehrlichia, Rickettsia and Coxiella genera are considered emerging pathogens and livestock is one of the contexts where the transmission of these microorganisms can occur. The goal of this study was to determine serological evidence for the exposure to these bacteria in cattle and humans with occupational exposure to livestock in the subregions North and Magdalena Medio, Antioquia, Colombia, and to explore related factors. A cross-sectional study was conducted in 48 livestock farms distributed in six municipalities from both subregions: Belmira, Entrerríos and San Pedro de los Milagros (North), and Puerto Berrío, Puerto Nare and Puerto Triunfo (Magdalena Medio). Blood samples from 332 people and 384 bovines were evaluated by serology (IgM and IgG) screening for bacteria from the Anaplasma, Ehrlichia, Rickettsia, and Coxiella genera. Seropositivity in humans from both regions was 42.4% (95%CI: 31.2-55.1) for Anaplasma, 74.2% (95%CI: 66.0-84.4) for Ehrlichia, 72.5% (95%CI: 62.1-82.0) for Rickettsia, and 60.7% (95%CI: 59.7-69.1) for Coxiella burnetii. In cattle, seropositivity was 31.6% (95%CI: 19.9-44.2), 66.8% (95%CI: 55.2-78.1), 64.6% (95%CI: 53.8-74.5), and 61.6% (95%CI: 51.9-69.2), respectively. History of biting by ticks, milking, vaccination, having dogs and hens in the residence, as well as the consumption of raw milk derivatives were some factors associated with the infection by the bacteria studied. The results suggest a previous and recent exposure to these zoonotic bacteria genera in people with occupational exposure to livestock, as well as in cattle in the two studied subregions.

Serological evidence of exposure to some zoonotic microorganisms in cattle and humans with occupational exposure to livestock in Antioquia, Colombia / Evidencia serológica de exposición a algunos microorganismos zoonóticos en bovinos y humanos con exposición ocupacional a ganadería en Antioquia, Colombia / Evidências sorológicas de exposição a alguns microrganismos zoonóticos em bovinos e em humanos com exposição ocupacional ao gado na Antióquia, Colômbia

Bacteria belonging to Anaplasma, Ehrlichia, Rickettsia and Coxiella genera are considered emerging pathogens and livestock is one of the contexts where the transmission of these microorganisms can occur. The goal of this study was to determine serological evidence for the exposure to these bacteria in cattle and humans with occupational exposure to livestock in the subregions North and Magdalena Medio, Antioquia, Colombia, and to explore related factors. A cross-sectional study was conducted in 48 livestock farms distributed in six municipalities from both subregions: Belmira, Entrerríos and San Pedro de los Milagros (North), and Puerto Berrío, Puerto Nare and Puerto Triunfo (Magdalena Medio). Blood samples from 332 people and 384 bovines were evaluated by serology (IgM and IgG) screening for bacteria from the Anaplasma, Ehrlichia, Rickettsia, and Coxiella genera. Seropositivity in humans from both regions was 42.4% (95%CI: 31.2-55.1) for Anaplasma, 74.2% (95%CI: 66.0-84.4) for Ehrlichia, 72.5% (95%CI: 62.1-82.0) for Rickettsia, and 60.7% (95%CI: 59.7-69.1) for Coxiella burnetii. In cattle, seropositivity was 31.6% (95%CI: 19.9-44.2), 66.8% (95%CI: 55.2-78.1), 64.6% (95%CI: 53.8-74.5), and 61.6% (95%CI: 51.9-69.2), respectively. History of biting by ticks, milking, vaccination, having dogs and hens in the residence, as well as the consumption of raw milk derivatives were some factors associated with the infection by the bacteria studied. The results suggest a previous and recent exposure to these zoonotic bacteria genera in people with occupational exposure to livestock, as well as in cattle in the two studied subregions.

Las bacterias pertenecientes a los géneros Anaplasma, Ehrlichia, Rickettsia y Coxiella son consideradas patógenos emergentes y la ganadería es uno de los contextos donde se puede producir la transmisión de este tipo de microorganismos. El objetivo de este estudio fue determinar la evidencia serológica, debida a la exposición a estas bacterias en bovinos y humanos con exposición ocupacional a ganadería en las subregiones Norte y Magdalena Medio, Antioquia, Colombia, además de estudiar los factores relacionados. Se realizó un estudio transversal en 48 fincas ganaderas, distribuidas en seis municipios de ambas subregiones: Belmira, Entrerríos y San Pedro de los Milagros (Norte), y Puerto Berrío, Puerto Nare y Puerto Triunfo (Magdalena Medio). Las muestras de sangre de 332 personas y 384 bovinos fueron evaluadas mediante tamización serológica (IgM e IgG) para la detección de bacterias de los géneros Anaplasma, Ehrlichia, Rickettsia, y Coxiella. La seropositividad en humanos de ambas regiones fue 42,4% (IC95%: 31,2-55,1) en el caso de Anaplasma, un 74,2% (IC95%: 66,0-84,4) en Ehrlichia, un 72,5% (IC95%: 62,1-82,0) en Rickettsia, y un 60,7% (IC95%: 59,7-69,1) en Coxiella burnetii. En los bovinos, la seropositividad fue 31,6% (IC95%: 19,9-44,2), 66,8% (IC95%: 55,2-78,1), 64,6% (IC95%: 53,8-74,5), y 61,6% (IC95%: 51,9-69,2), respectivamente. El antecedente de haber sido mordido por garrapatas, ordeñar, vacunación, tener perros y gallinas en la residencia, así como el consumo de derivados de leche cruda fueron algunos de los factores asociados con la infección por las bacterias estudiadas. Los resultados sugieren la exposición previa y reciente a estas bacterias en personas con una exposición ocupacional a la ganadería, así como a los bovinos en las dos subregiones estudiadas.

As bactérias dos gêneros Anaplasma, Ehrlichia, Rickettsia e Coxiella são considerados patógenos emergentes, e a transmissão desses microrganismos pode ocorrer no contexto da pecuária. O estudo teve como objetivos determinar as evidências sorológicas de exposição a essas bactérias em bovinos e em humanos com exposição ocupacional ao gado nas sub-regiões Norte e Magdalena Médio, Antióquia, Colômbia, e explorar fatores associados. Foi realizado um estudo transversal em 48 fazendas de gado bovino distribuídas em seis municípios nas duas sub-regiões: Belmira, Entrerríos e San Pedro de los Milagros (Norte) e Puerto Berrío, Puerto Nare e Puerto Triunfo (Magdalena Médio). Amostras de sangue de 332 humanos e 384 bovinos foram analisadas com sorologia (IgM e IgG) para bactérias dos gêneros Anaplasma, Ehrlichia, Rickettsia e Coxiella. Os níveis de sorologia positiva em humanos das duas regiões foram de 42,4% (IC95%: 31,2-55,1) para Anaplasma, 74,2% (IC95%: 66,0-84,4) para Ehrlichia, 72,5% (IC95%: 62,1-82,0) para Rickettsia e 60,7% (IC95%: 59,7-69,1) para Coxiella burnetii. Nos bovinos, os níveis foram 31,6% (IC95%: 19,9-44,2), 66,8% (IC95%: 55,2-78,1), 64,6% (IC95%: 53,8-74,5) e 61,6% (IC95%: 51,9-69,2), respectivamente. Os fatores associados às bactérias estudadas foram: história de picada de carrapato, ordenha, vacinação, presença de cães e galinhas no domicílio e consumo de laticínios feitos com leite cru, entre outros. Os resultados sugerem exposição prévia e recente a esses gêneros bacterianos zoonóticos em pessoas com contato ocupacional com gado, assim como nos próprios animais, nas duas sub-regiões estudadas.

Food security in indigenous and peasant populations: a systematic review. / Seguridad alimentaria en poblaciones indígenas y campesinas: una revisión sistemática.

Food security and the vulnerability among indigenous and peasant populations has become a topic of interest to public health all around the world, leading to the investigation about measurement, classification and factors that determine it. This systematic review aims to describe the situation of food security in indigenous and peasant communities, and the methods used for evaluation. The literature search was performed on the Pub Med (5), ScienceDirect (221) and Scopus (377) databases searching for publications between 2004 and 2015, a total of 603 items were located with the search engines. At the end of the screening process and after adding the items found in the gray literature, 25 papers were obtained to write the review. In the 11 years evaluated between 2004 and 2015, scientific activity around the theme was poor with just 4.54% of the publications on this subject, but for 2011 the percentage increased to 13 publications, 63%. Various factors that influence the development of food insecurity are climate change, the diversity of agriculture, globalization and market westernization.

Seguridad alimentaria en poblaciones indígenas y campesinas: una revisión sistemática / Food security in indigenous and peasant populations: a systematic review

Resumen La seguridad alimentaria y su vulnerabilidad en poblaciones indígenas y campesinas, se ha convertido en un tema de interés para la salud pública alrededor de todo el mundo, en asuntos como medición, clasificación y factores que la determinan. Esta revisión sistemática tiene como propósito describir la situación de la seguridad alimentaria en comunidades indígenas y campesinas, y los métodos empleados para su evaluación. La búsqueda de la literatura se realizó en las bases de datos PubMed (5), ScienceDirect (221) y Scopus (377), buscando publicaciones entre los años 2004 y 2015, con un total de 603 artículos arrojados por las rutas de búsqueda. Al final del proceso de tamización y sumados los artículos encontrados en la literatura gris se obtuvieron 25 artículos para escribir la revisión. En los 11 años evaluados, entre el 2004 y el 2015, la actividad científica alrededor del tema fue escasa con apenas un 4,54% de las publicaciones en este tema, pero para el año 2011 el porcentaje de publicaciones aumentó hasta un 13,63%. Se encontraron diversos factores que tienen influencia en el desarrollo de la inseguridad alimentaria, entre ellos está el cambio climático, la diversidad de la agricultura y la globalización y occidentalización del mercado.

Abstract Food security and the vulnerability among indigenous and peasant populations has become a topic of interest to public health all around the world, leading to the investigation about measurement, classification and factors that determine it. This systematic review aims to describe the situation of food security in indigenous and peasant communities, and the methods used for evaluation. The literature search was performed on the Pub Med (5), ScienceDirect (221) and Scopus (377) databases searching for publications between 2004 and 2015, a total of 603 items were located with the search engines. At the end of the screening process and after adding the items found in the gray literature, 25 papers were obtained to write the review. In the 11 years evaluated between 2004 and 2015, scientific activity around the theme was poor with just 4.54% of the publications on this subject, but for 2011 the percentage increased to 13 publications, 63%. Various factors that influence the development of food insecurity are climate change, the diversity of agriculture, globalization and market westernization.

Propuesta de unos principios generales para la ciencia de la agroecología: una reflexión / Proposal of some general principles for the science of agroecology: a reflection / Proposta de princípios gerais para a ciência da agroecologia: uma reflexão

Resumen Diversos autores han presentado a la agroecología como una ciencia que se funda en principios. No obstante, no existe un consenso alrededor de cuáles son y algunos de los que son formulados no se corresponden con lo que es un principio científico, mientras otros no están redactados de manera adecuada impidiendo determinar de manera clara cuáles son los presupuestos básicos a partir de los cuales se estructura toda la teoría agroecología. Por este motivo, se realizó una revisión crítica de los diversos principios que se han planteado en la teoría y se formularon siete principios generales que pueden operar como un centro firme que permita avanzar en la consolidación de la agroecología.

Palabras clave: Sostenibilidad agraria, biomímesis, principios agroecológicos, biodiversidad

Abstract Several authors have presented agroecology as a science based on principles. However, there is not agreement on what are the basic principles of agroecology. Also, some of the principles have been formulated in a way that does not correspond to what a scientific principle is. For this reason, a critical review of theoretical literature was conducted in order to establish the basic principles of agroecology. Seven principles that can work as hard core of theory of agroecology.

Resumo Vários autores apresentaram agroecologia como uma ciência baseada em princípios. No entanto, não há consenso em torno do que são e alguns dos que são formulados não correspondem ao que é um princípio científico, enquanto outros não são elaborados de forma adequada, evitando a determinação clara dos orçamentos básicos com base em que é estruturada toda a teoria da agroecologia. Por esta razão, foi feita uma revisão crítica dos vários princípios que foram levantados na teoria e foram formulados sete princípios gerais que podem funcionar como um centro firme que permite o progresso na consolidação da agroecologia.

Tripanosomiasis bovina en ganadería lechera de trópico alto: primer informe de Haematobia irritans como principal vector de T. vivax y T. evansi en Colombia

La tripanosomiasis bovina es una enfermedad hemoparasitaria transmitida en Latinoamérica principalmente por moscas picadoras de la familia Tabanidae. El objetivo del estudio fue evaluar la infección por Trypanosoma vivax y Trypanosoma evansi en ganadería bovina especializada en producción de leche en una hacienda y sus potenciales vectores. Se realizó un estudio parasitológico y entomológico directo por técnicas de microscopia y reacción en cadena de la polimerasa (PCR) con dos marcadores moleculares para diferenciar especies de Trypanosoma en muestras de sangre de bovinos y moscas. La frecuencia de infección por Trypanosoma vivax y Trypanosoma evansi en bovinos fue de 3,6 y 0 %, respectivamente. La caracterización de vectores muestra a Haematobia irritans como la mosca más frecuente en la zona de estudio (97,1 %), seguida de Stomoxys calcitrans (2,8 %). No se identificaron tabánidos. Se encontró T. vivax y T. evansi en probóscide y toráx-abdomen de las moscas picadoras Haematobia irritans y Stomoxys calcitrans, lo que representa un comportamiento epizoótico atípico al que sucede en países de Suramérica. Por su alta densidad poblacional, se sugiere la mosca Haematobia irritans como el principal potencial vector.

Bovine trypanosomiasis is a hemoparasitic disease transmitted in Latin America mainly by biting flies of the family Tabanidae. The study aimed to evaluate infection by Trypanosoma vivax and Trypanosoma evansi in cattle specialized in milk production on a farm and their potential vectors. A direct parasitological and entomological study was performed using microscopy techniques and polymerase chain reaction (PCR) with two molecular markers to differentiate Trypanosoma species in blood samples of cattle and flies. Infection frequency with Trypanosoma vivax and Trypanosoma evansi in cattle was 3.6 and 0%, respectively. Characterization of vectors shows Haematobia irritans as the most frequent fly in the study area (97.1%), followed by Stomoxys calcitrans (2.8%). No horseflies were identified. T. vivax and T. evansi were found in proboscis and thorax-abdomen of biting flies Haematobia irritans and Stomoxys calcitrans, representing an epizootic behavior, atypical in South American countries. Due to its high population density, it is suggested that the Haematobia irritans fly is the main potential vector.

A tripanossomíase bovina é uma doença causada por hemoparasitas e transmitida na América Latina principalmente por moscas picadoras da família Tabanidae. O objetivo do estudo foi avaliar a infecção por Trypanosoma vivax e Trypanosoma evansi em gado bovino especializada em produção de leite em uma fazenda e seus potenciais vectores. Se realizou um estudo parasitológico e entomológico direto por técnicas de microscopia e reação em cadeia da polimerase (PCR) com dois marcadores moleculares para diferenciar espécies de Typanosoma em amostras de sangue de bovinos e moscas. A frequência de infecção por Trypanosoma vivax e Trypanosoma evansi em bovinos foi de 3,6 e 0 %, respectivamente. A caracterização de vetores mostra a Haematobia irritans como a mosca mais frequente na zona de estudo (97,1 %), seguida de Stomoxys calcitrans (2,8 %). Não se identificaram tabanídeos. Se encontrou T. vivax e T. evansi em proboscídea e tórax-abdômen das moscas picadoras Haematobia irritans e Stomoxys calcitrans, o que representa um comportamento epizoótico atípico ao que sucede em países da América do Sul. Por sua alta densidade populacional, se sugere a mosca Haematobia irritans como o principal potencial vetor.

Tripanosomiasis bovina en ganadería lechera de trópico alto: primer informe de Haematobia irritans como principal vector de T. vivax y T. evansi en Colombia / Bovine trypanosomiasis in dairy farming in the high tropics: First report of Haematobia irritans as the main vector for T. vivax and T. evansi in Colombia / Tripanossomíase bovina em gado leiteiro de trópico alto: primeiro relatório de Haematobia irritans como principal vetor de T. vivax e T. evansi na Colômbia

Resumen: La tripanosomiasis bovina es una enfermedad hemoparasitaria transmitida en Latinoamérica principalmente por moscas picadoras de la familia Tabanidae. El objetivo del estudio fue evaluar la infección por Trypanosoma vivax y Trypanosoma evansi en ganadería bovina especializada en producción de leche en una hacienda y sus potenciales vectores. Se realizó un estudio parasitológico y entomológico directo por técnicas de microscopia y reacción en cadena de la polimerasa (PCR) con dos marcadores moleculares para diferenciar especies de Trypanosoma en muestras de sangre de bovinos y moscas. La frecuencia de infección por Trypanosoma vivax y Trypanosoma evansi en bovinos fue de 3,6 y 0 %, respectivamente. La caracterización de vectores muestra a Haematobia irritans como la mosca más frecuente en la zona de estudio (97,1 %), seguida de Stomoxys calcitrans (2,8 %). No se identificaron tabánidos. Se encontró T. vivax y T. evansi en probóscide y toráx-abdomen de las moscas picadoras Haematobia irritans y Stomoxys calcitrans, lo que representa un comportamiento epizoótico atípico al que sucede en países de Suramérica. Por su alta densidad poblacional, se sugiere la mosca Haematobia irritans como el principal potencial vector.

Abstract: Bovine trypanosomiasis is a hemoparasitic disease transmitted in Latin America mainly by biting flies of the family Tabanidae. The study aimed to evaluate infection by Trypanosoma vivax and Trypanosoma evansi in cattle specialized in milk production on a farm and their potential vectors. A direct parasitological and entomological study was performed using microscopy techniques and polymerase chain reaction (PCR) with two molecular markers to differentiate Trypanosoma species in blood samples of cattle and flies. Infection frequency with Trypanosoma vivax and Trypanosoma evansi in cattle was 3.6 and 0%, respectively. Characterization of vectors shows Haematobia irritans as the most frequent fly in the study area (97.1%), followed by Stomoxys calcitrans (2.8%). No horseflies were identified. T. vivax and T. evansi were found in proboscis and thorax-abdomen of biting flies Haematobia irritans and Stomoxys calcitrans, representing an epizootic behavior, atypical in South American countries. Due to its high population density, it is suggested that the Haematobia irritans fly is the main potential vector.

Resumo: A tripanossomíase bovina é uma doença causada por hemoparasitas e transmitida na América Latina principalmente por moscas picadoras da família Tabanidae. O objetivo do estudo foi avaliar a infecção por Trypanosoma vivax e Trypanosoma evansi em gado bovino especializada em produção de leite em uma fazenda e seus potenciais vectores. Se realizou um estudo parasitológico e entomológico direto por técnicas de microscopia e reação em cadeia da polimerase (PCR) com dois marcadores moleculares para diferenciar espécies de Typanosoma em amostras de sangue de bovinos e moscas. A frequência de infecção por Trypanosoma vivax e Trypanosoma evansi em bovinos foi de 3,6 e 0 %, respectivamente. A caracterização de vetores mostra a Haematobia irritans como a mosca mais frequente na zona de estudo (97,1 %), seguida de Stomoxys calcitrans (2,8 %). Não se identificaram tabanídeos. Se encontrou T. vivax e T. evansi em proboscídea e tórax-abdômen das moscas picadoras Haematobia irritans e Stomoxys calcitrans, o que representa um comportamento epizoótico atípico ao que sucede em países da América do Sul. Por sua alta densidade populacional, se sugere a mosca Haematobia irritans como o principal potencial vetor.

Infección por Chlamydia trachomatis en pacientes de una institución de salud de Bogotá y Medellín, 2012-2015 / Chlamydia trachomatis infection in patients of a health institution of Bogota and Medellin, 2012-2015

Introduction: Chlamydia trachomatis presents clinical consequences and it is barely studied in Colombia. Objective: To compare the C. trachomatis infection in Bogotá and Medellín with specific frequencies by gender and age group, between 2012-2015. Methods: Descriptive study of multiple groups, with 1,660 people in Bogotá and 1,087 in Medellin. Anti-Chlamydia trachomatis test with recombinant antigens MOMP, TARP and CPAF was applied; 100% sensitivity and 99.6% specificity. It was estimated and compared the frequency of infection by gender and age group, by hypothesis testing, confidence intervals and prevalence ratios. Results: The largest proportion were women and people between 30-39 years. The frequency of positive IgG in Bogotá was 15.6% (95% CI = 13.4 to 17.8) in Medellin 16.9% (95% CI = 13.4 to 20.4), while the frequency of positive IgM was 0% in Medellin and 0.2% (95% CI = 0.01-1.0) in Bogotá; it was higher in women. In Bogotá, the frequency was higher in younger than 30 years and lower in older than 50. Discussion: The high frequency of infection, its greater occurrence in women, the differences found in the age groups, the low number of investigations in Colombia and clinical risks associated with C. trachomatis, show the need to improve surveillance, screening and research in this infection.

Introducción: Chlamydia trachomatis presenta graves consecuencias clínicas y es poco estudiada en Colombia. Objetivo: Comparar la infección por C. trachomatis en Bogotá y Medellín, y sus frecuencias específicas según sexo y grupo etario, 2012-2015. Material y Métodos: Estudio descriptivo de grupos múltiples, con 1.660 personas de Bogotá y 1.087 de Medellín. Se aplicó serología anti-Chalmydia trachomatis con antígenos recombinantes MOMP, TARP y CPAF; sensibilidad 100% y especificidad 99,6%. Se estimó y comparó la infección según sexo y grupo etario, mediante pruebas de hipótesis, intervalos de confianza y razones de prevalencia. Resultados: La mayor proporción correspondió a mujeres y personas entre 30-39 años. La frecuencia de historia de infección, según IgG, en Bogotá fue 15,6% (IC 95% = 13,4-17,8), en Medellín 16,9% (IC 95% = 13,4-20,4), mientras que con IgM fue 0% en Medellín y 0,2% (IC 95% = 0,01-1,0) en Bogotá; siendo mayor en las mujeres. En Bogotá, la frecuencia de infección fue más elevada bajo 30 años de edad y más baja sobre 50. Discusión: La elevada frecuencia de infección, la mayor ocurrencia en las mujeres, las diferencias halladas en los grupos etarios, el bajo número de investigaciones en Colombia y los riesgos clínicos asociados con C. trachomatis, evidencian la necesidad de mejorar la vigilancia, tamización e investigación en esta infección.

Perfil de (morbilidad de pacientes hipertensos de una ese del área metropolitana de medellín, colombia 2013

Introducción. La hipertensión arterial es una enfermedad crónica degenerativa, considerada como un problema de salud pública a nivel mundial. Objetivo. Describir el perfil de comorbilidad de pacientes del programa de HTA de una ESE en el área metropolitana de Medellín, 2013. Materiales y métodos. Estudio descriptivo de 4827 personas pertenecientes a un programa de control de la HTA. Se calcularon las prevalencias globales de las enfermedades diagnósticas según la Clasificación Internacional de Enfermedades. Resultados. El 71,2 % fueron mujeres; la edad promedio fue 64 años con rango intercuartil entre 55 y 74 años. Se identificaron 153 comorbilidades, entre las cuales las más frecuentes fueron las metabólicas (17 %), las infecciosas (15,7 %), neurológicas (15 %), cardiovasculares (12 %) y degenerativas (2,6 %). Conclusiones. Este estudio constituye un antecedente importante para que la atención, prevención y promoción en salud incorpore acciones específicas para los grupos de mayor riesgo identificados en cada patología.

Introduction. Hypertension is a chronic degenerative disease considered as a public health problem worldwide magnitude. Objective. To describe the comorbidity profile of patients with HBP of an Institution Services Health of the metropolitan area of Medellin, 2013. Materials and Methods. Descriptive studied of 4,827 persons belonging to a program for control of hypertension. Global prevalence was calculated for each disease of the International Classification of Diseases. Results. 71.2 % were female; the average age was 64 years with interquartile range between 55 and 74 years. 153 pathologies were identified among which the most prevalent were metabolic with 17 %, followed by infectious 15.7 %, neurological 15 %, cardiovascular 12 % and degenerative 2.6 %. Conclusions. This study is an important issue for care, prevention and promotion health that incorporate specific actions for the highest risk groups identified in each pathology.

Introdução. A hipertensão arterial é uma enfermidade crônica degenerativa considerada como um problema de saúde pública em nível mundial. Objetivo. Descrever o perfil de comorbilidade de pacientes do programa de HTA de uma ESE na área metropolitana de Medellín, 2013. Materiais e métodos. Estudo descritivo de 4827 pessoas pertencentes a um programa de controle da HTA. Foram calculadas as prevalências globais das enfermidades diagnósticas segundo a Classificação Internacional de Enfermidades. Resultados. 71,2 % eram mulheres; a idade média foi de 64 anos com amplitude interquartil entre 55 e 74 anos. Foram identificados 153 comorbilidades, entre as quais as mais frequentes foram as metabólicas (17 %), as infecciosas (15,7 %), as neurológicas (15 %), as cardiovasculares (12 %) e as degenerativas (2,6 %). Conclusões. Eeste estudo constitui um antecedente importante para que a atenção, a prevenção e a promoção da saúde incorporem ações específicas para os grupos de maior risco identificados em cada patologia.

Principales características de las biopelículas relacionadas con procesos patológicos descritos en humanos en los últimos 10 años, revisión sistemática

Introducción. Uno de los mayores avances en microbiología ha sido el conocimiento del crecimiento de microorganismos sobre diferentes superficies, formando biopelículas, en donde su comportamiento y fisiología es significativamente diferente de aquellos microorganismos que crecen de forma individual o planctónica. En este estudio se describen las principales características de las biopelículas relacionadas con procesos patológicos en humanos. Métodos. Se realizó una revisión sistemática de la literatura relacionada en las bases de datos ScienceDirect, PubMed y el buscador genérico Google Scholar. Se incluyeron en el estudio 35 artículos, los cuales cumplieron con los criterios de inclusión y de exclusión determinados. Resultados. Se describieron los agentes etiológicos involucrados en la formación de biopelículas, así como la caracterización acorde con los sitos orgánicos donde se pueden establecer, y los factores patogénicos relacionados con la formación. Conclusión. En la formación de biopelículas influyen factores animados e inanimados relacionados con características específicas del hospedero.

Introduction: One of the greatest advances in microbiology has been the knowledge of growth and development of microorganisms on surfaces forming biofilms, and its behavior and physiology are significantly different from those microorganisms that have an individual or planktonic growth. In this study, we describe the main characteristics of biofilms related to pathological processes in humans. Methods: A systematic literature review was conducted in the databases ScienceDirect, PubMed and the generic search engine Google Scholar. In the study were included 35 articles, which met the specific inclusion and exclusion criteria. Results: We describe the etiologic agents involved in the formation of biofilms, the characterization of these organic sites where these can be formed and the pathogenic factors related to the formation of biofilms. Conclusion: Biofilm formation is influenced by animate and inanimate factors involved in the host.

Introdução: Um dos maiores avanços em microbiologia é o conhecimento sobre o crescimento e desenvolvimento de microrganismos em diferentes superfícies formando biofilmes, sendo seu comportamento e fisiologia significativamente diferentes dos microrganismos que crescem de forma individual ou planctônicas. Neste estudo são descritas as principais características dos biofilmes relacionadas com processos patológicos em humanos. Métodos: Uma revisão sistemática da literatura foi realizada nas bases de dados ScienceDirect, PubMed e no buscador genérico Google Scholar. No estudo foram incluídos 35 artigos, os quais cumpriram com os critérios de inclusão e de exclusão determinados. Resultados: Os agentes etiológicos envolvidos na formação de biofilmes foram descritos, assim como a caracterização de acordo com os sítios orgânicos onde podem se estabelecer, e os fatores patogênicos relacionados com a formação. Conclusão: Na formação de biofilmes influem fatores animados e inanimados relacionados com características específicas do hospedeiro.

[Chlamydia trachomatis infection in patients of a health institution of Bogota and Medellin, 2012-2015]. / Infección por Chlamydia trachomatis en pacientes de una institución de salud de Bogotá y Medellín, 2012-2015.

INTRODUCTION: Chlamydia trachomatis presents clinical consequences and it is barely studied in Colombia. OBJECTIVE: To compare the C. trachomatis infection in Bogotá and Medellín with specific frequencies by gender and age group, between 2012-2015. METHODS: Descriptive study of multiple groups, with 1,660 people in Bogotá and 1,087 in Medellin. Anti-Chlamydia trachomatis test with recombinant antigens MOMP, TARP and CPAF was applied; 100% sensitivity and 99.6% specificity. It was estimated and compared the frequency of infection by gender and age group, by hypothesis testing, confidence intervals and prevalence ratios. RESULTS: The largest proportion were women and people between 30-39 years. The frequency of positive IgG in Bogotá was 15.6% (95% CI = 13.4 to 17.8) in Medellin 16.9% (95% CI = 13.4 to 20.4), while the frequency of positive IgM was 0% in Medellin and 0.2% (95% CI = 0.01-1.0) in Bogotá; it was higher in women. In Bogotá, the frequency was higher in younger than 30 years and lower in older than 50. DISCUSSION: The high frequency of infection, its greater occurrence in women, the differences found in the age groups, the low number of investigations in Colombia and clinical risks associated with C. trachomatis, show the need to improve surveillance, screening and research in this infection.