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1.
Acta Trop ; 255: 107240, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38705342

RESUMO

Cystic echinococcosis (CE), caused by the tapeworm Echinococcus granulosus, is a zoonotic parasitic disease that still represents a serious threat to human and animal health worldwide. The Mediterranean basin is recognized as one of the major hotspots of CE due to several factors, including the presence of diverse intermediate host species as well as socio-economic and cultural conditions of local communities. This study aims to take a closer look at epidemiological data on CE in the Mediterranean area and assess the knowledge attitudes and practices of shepherds towards this disease in four countries (Algeria, Greece, Italy and Tunisia), highly endemic for CE, with the final goal of identifying highly endemic risk areas and practices in use which might potentially allow the persistence of E. granulosus infection in these areas. To update the epidemiological scenario of CE in Mediterranean areas, a comprehensive review of peer-reviewed literature on CE prevalence data published during the 2017-2023 period was carried out and, through a geographical information system (GIS), a map displaying the current CE distribution in the Mediterranean area was generated. In addition, a questionnaire survey was conducted through in-depth interviews of the farmers to collect information on their management system as well as knowledge attitudes and practices towards CE. From the farmer-participatory survey some risky practices emerged including the non-regular deworming of dogs or the use of ineffective drugs or dosing, as well as the provision of uncooked animal viscera to dogs. Finally, lower levels of knowledge and awareness of the disease was observed among farmers from North Africa compared with those of European countries. In conclusion, the results obtained highlight that CE is still a very serious problem in Mediterranean areas and increased efforts are needed to promote awareness among farmers and to turn research results into policy in order to reduce the spread of this disease, according to the One Health perspective.


Assuntos
Equinococose , Echinococcus granulosus , Conhecimentos, Atitudes e Prática em Saúde , Gado , Animais , Equinococose/epidemiologia , Equinococose/veterinária , Equinococose/prevenção & controle , Gado/parasitologia , Cães , Região do Mediterrâneo/epidemiologia , Doenças do Cão/epidemiologia , Doenças do Cão/parasitologia , Doenças do Cão/prevenção & controle , Grécia/epidemiologia , Zoonoses/epidemiologia , Zoonoses/parasitologia , Zoonoses/prevenção & controle , Humanos , Itália/epidemiologia , Prevalência , Bovinos , Tunísia/epidemiologia , Argélia/epidemiologia , Inquéritos e Questionários , Ovinos , Fazendeiros/estatística & dados numéricos
2.
PLoS Negl Trop Dis ; 15(8): e0009663, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34403426

RESUMO

Tsetse-transmitted Animal African Trypanosomosis (AAT) is one of the most important constraints to livestock development in Africa. Use of trypanocides has been the most widespread approach for the management of AAT, despite the associated drug resistance and health concerns associated with drug metabolites in animal products. Alternative control measures that target tsetse fly vectors of AAT, though effective, have been hard to sustain in part because these are public goods applied area-wide. The International Centre of Insect Physiology and Ecology (icipe) and partners have developed and implemented a novel tsetse repellent collar (TRC) applied on animals to limit contact of tsetse flies and livestock, thereby reducing AAT transmission. The TRC has now advanced to commercialization. A household-level survey involving 632 cattle keeping households, was conducted in Shimba Hills region of Kwale County, where field trials of the TRC have been previously conducted to assess farmers' knowledge, perception, and practices towards the management of tsetse flies, their willingness to pay (WTP) for the TRC, and factors affecting the WTP. Almost all the respondents (90%) reported that tsetse flies were the leading cattle infesting pests in the area. About 22% of these correctly identified at least four AAT clinical signs, and even though many (68%) used trypanocidal drugs to manage the disease, 50% did not perceive the drug as being effective in AAT management (50%). Few respondents (8%) were aware of the harmful effects of trypanocidal drugs. About 89% of the respondents were aware of icipe TRC, and 30% of them were using the field trial collars during the survey. Sixty-three (63%) of them were willing to pay for the TRC at the same cost they spend treating an animal for AAT. On average farmers were willing to pay KES 3,352 per animal per year. Male educated household heads are likely to pay more for the TRC. Moreover, perceived high AAT prevalence and severity further increases the WTP. Wider dissemination and commercialization of the herd-level tsetse control approach (TRC) should be encouraged to impede AAT transmission and thus enhance food security and farm incomes among the affected rural communities. Besides the uptake of TRC can be enhanced through training, especially among women farmers.


Assuntos
Fazendeiros/psicologia , Controle de Insetos/métodos , Repelentes de Insetos/farmacologia , Tripanossomicidas/farmacologia , Tripanossomíase Africana/prevenção & controle , Adulto , Idoso , Animais , Resistência a Medicamentos , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Controle de Insetos/economia , Quênia , Gado/parasitologia , Masculino , Pessoa de Meia-Idade , Percepção , Prevalência , Tripanossomíase Africana/parasitologia , Moscas Tsé-Tsé/parasitologia
3.
PLoS One ; 16(7): e0254558, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34283848

RESUMO

Trypanosomiasis is a significant productivity-limiting livestock disease in sub-Saharan Africa, contributing to poverty and food insecurity. In this paper, we estimate the potential economic gains from adopting Waterbuck Repellent Blend (WRB). The WRB is a new technology that pushes trypanosomiasis-transmitting tsetse fly away from animals, improving animals' health and increasing meat and milk productivity. We estimate the benefits of WRB on the production of meat and milk using the economic surplus approach. We obtained data from an expert elicitation survey, secondary and experimental sources. Our findings show that the adoption of WRB in 5 to 50% of the animal population would generate an economic surplus of US$ 78-869 million per annum for African 18 countries. The estimated benefit-cost ratio (9:1) further justifies an investment in WRB. The technology's potential benefits are likely to be underestimated since our estimates did not include the indirect benefits of the technology adoption, such as the increase in the quantity and quality of animals' draught power services and human and environmental health effects. These benefits suggest that investing in WRB can contribute to nutrition security and sustainable development goals.


Assuntos
Controle de Insetos/métodos , Repelentes de Insetos/farmacologia , Tripanossomíase Africana/prevenção & controle , Moscas Tsé-Tsé/efeitos dos fármacos , África Subsaariana/epidemiologia , Animais , Bovinos , Análise Custo-Benefício , Humanos , Controle de Insetos/economia , Repelentes de Insetos/economia , Inseticidas/economia , Inseticidas/farmacologia , Gado/parasitologia , Tripanossomíase Africana/economia , Tripanossomíase Africana/transmissão , Tripanossomíase Africana/veterinária , Moscas Tsé-Tsé/patogenicidade
4.
BMC Vet Res ; 17(1): 185, 2021 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-33952280

RESUMO

BACKGROUND: Platyhelminth infections of livestock can result in considerable economic losses. This study aims to evaluate the spatial frequency of cystic echinococcosis (CE), dicrocoeliasis, and fascioliasis in livestock slaughtered in Iran during the years 2015-2019 and estimate direct costs associated with organ condemnation due to these parasites. METHODS: Abattoir data from 413 abattoirs representing all 31 Iranian provinces were collected from the Iran Veterinary Organization. Infection prevalence was calculated per year at the province level. The Local Moran's I statistic was performed to evaluate spatial autocorrelation of animals positive at slaughter for the years 2015-2019. Direct costs associated with condemned livers were calculated for each parasitic condition, with costs associated with condemned lungs also included for CE. RESULTS: Overall prevalence values for the study timeframe were as follows: sheep and goat fascioliasis 1.56% (95% CI: 1.56-1.56%), cattle fascioliasis 3.86% (95% CI: 3.85-3.88%), sheep and goat dicrocoeliasis 4.63% (95% CI: 4.62-4.63%), cattle dicrocoeliasis 3.08% (95% CI: 3.07-3.09%), sheep and goat CE 5.32% (95% CI: 5.32-5.33%), and cattle CE 7.26% (95% CI: 7.24-7.28%). Northwest Iran had the highest prevalence of CE and fascioliasis. High infection areas for Dicrocoelium spp. included the provinces of Zanjan, Gilan, Qazvin, and Tehran, which are located in northern Iran. Direct economic losses for sheep and goat fascioliasis, dicrocoeliasis, and CE for the study period were US$13,842,759, US$41,771,377, and US$22,801,054, respectively. Direct economic losses for cattle fascioliasis, dicrocoeliasis, and CE for the study period were US$1,989,200, US$1,668,986, and US$2,656,568, respectively. CONCLUSION: Our findings provide valuable data for future monitoring of these important parasitic diseases in Iranian livestock. Disease control strategies are required to reduce the economic and public health impact of these platyhelminths.


Assuntos
Dicrocelíase/veterinária , Equinococose/veterinária , Fasciolíase/veterinária , Matadouros/estatística & dados numéricos , Animais , Bovinos , Doenças dos Bovinos/economia , Doenças dos Bovinos/epidemiologia , Doenças dos Bovinos/parasitologia , Dicrocelíase/economia , Dicrocelíase/epidemiologia , Dicrocoelium , Equinococose/economia , Equinococose/epidemiologia , Echinococcus , Fasciola , Fasciolíase/economia , Fasciolíase/epidemiologia , Doenças das Cabras/economia , Doenças das Cabras/epidemiologia , Doenças das Cabras/parasitologia , Cabras , Irã (Geográfico)/epidemiologia , Gado/parasitologia , Ovinos , Doenças dos Ovinos/economia , Doenças dos Ovinos/epidemiologia , Doenças dos Ovinos/parasitologia , Zoonoses/epidemiologia , Zoonoses/parasitologia
5.
Am J Trop Med Hyg ; 104(5): 1620-1624, 2021 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-33684062

RESUMO

Stunting (low height for age) affects approximately one-quarter of children aged < 5 years worldwide. Given the limited impact of current interventions for stunting, new multisectoral evidence-based approaches are needed to decrease the burden of stunting in low- and middle-income countries (LMICs). Recognizing that the health of people, animals, and the environment are connected, we present the rationale and research agenda for considering a One Health approach to child stunting. We contend that a One Health strategy may uncover new approaches to tackling child stunting by addressing several interdependent factors that prevent children from thriving in LMICs, and that coordinated interventions among human health, animal health, and environmental health sectors may have a synergistic effect in stunting reduction.


Assuntos
Controle de Doenças Transmissíveis/métodos , Transtornos do Crescimento/prevenção & controle , Desnutrição/prevenção & controle , Saúde Única/tendências , Síndrome de Emaciação/prevenção & controle , Bem-Estar do Animal/organização & administração , Animais , Pré-Escolar , Doenças Transmissíveis/economia , Doenças Transmissíveis/epidemiologia , Países em Desenvolvimento/economia , Saúde Ambiental/organização & administração , Transtornos do Crescimento/epidemiologia , Humanos , Higiene , Renda , Lactente , Gado/microbiologia , Gado/parasitologia , Gado/virologia , Desnutrição/epidemiologia , Pobreza/economia , Pobreza/prevenção & controle , Síndrome de Emaciação/epidemiologia
6.
Vet Clin North Am Food Anim Pract ; 36(1): 17-30, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32029182

RESUMO

Control of gastrointestinal nematodes has been based on anthelmintics. However, this strategy is unsustainable owing to anthelmintic resistance. Parasitic nematodes have biologic and genetic features that favor the development of drug resistance, making the emergence of resistant nematodes inevitable. The rate of resistance development is affected controllable factors. There is a need to change the paradigm of how gastrointestinal nematodes are controlled to decrease the rate at which resistance develops. This article reviews the biology and prevalence of anthelmintic resistance, and provides recommendations for diagnosing resistance and for strategies that should be implemented to reduce the development of resistance.


Assuntos
Anti-Helmínticos/farmacologia , Doenças dos Bovinos/tratamento farmacológico , Doenças das Cabras/tratamento farmacológico , Gado/parasitologia , Infecções por Nematoides/veterinária , Doenças dos Ovinos/tratamento farmacológico , Animais , Bovinos , Doenças dos Bovinos/epidemiologia , Doenças dos Bovinos/parasitologia , Resistência a Medicamentos , Doenças das Cabras/epidemiologia , Doenças das Cabras/parasitologia , Cabras , Nematoides/isolamento & purificação , Infecções por Nematoides/tratamento farmacológico , Infecções por Nematoides/epidemiologia , Prevalência , Ovinos , Doenças dos Ovinos/epidemiologia , Doenças dos Ovinos/parasitologia
7.
J Helminthol ; 94: e115, 2020 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-31931890

RESUMO

Drug resistance to helminth parasites is one of the most serious problems to threaten the livestock industry. The problem also poses a major threat to public health. Therefore, novel and safe agents should urgently be investigated to control parasitic infections. The current study was conducted to evaluate the possible antiparasitic effects of zinc oxide nanoparticles (ZnO-NPs) on one of the most prevalent gastrointestinal nematodes, Teladorsagia circumcincta. The worms were incubated with various concentrations of ZnO-NPs: 1, 4, 8, 12 and 16 ppm for 24 hours. Mobility and mortality of the parasites were recorded at four-hour intervals. At the endpoint, several biomarkers of oxidative/nitrosative stress, including superoxide dismutase, glutathione peroxidase and catalase, as well as lipid peroxidation, protein carbonylation, total antioxidant status, nitric oxide contents and DNA damage, were measured in the homogenized samples. ZnO-NPs showed significant anthelminthic effects, depending on time and concentration. Furthermore, the nanoparticle induced severe oxidative/nitrosative stress and DNA damage. ZnO-NPs could be considered as a novel and potent anthelminthic agent.


Assuntos
Anti-Helmínticos/farmacologia , Infecções por Nematoides/veterinária , Óxido de Zinco/farmacologia , Animais , Biomarcadores Farmacológicos , Dano ao DNA , Gado/parasitologia , Nanopartículas/parasitologia , Infecções por Nematoides/tratamento farmacológico , Infecções por Nematoides/parasitologia , Estresse Oxidativo
8.
Parasit Vectors ; 12(1): 185, 2019 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-31029149

RESUMO

BACKGROUND: The southern cattle fever tick (SCFT), Rhipicephalus (Boophilus) microplus, remains endemic in Puerto Rico. Systematic treatment programmes greatly reduced and even eradicated temporarily this tick from the island. However, a systemic treatment programme that includes integrated management practices for livestock against SCFT remains to be established in the island. We describe a spatially-explicit, individual-based model that simulates climate-livestock-SCFT-landscape interactions. This model was developed as an investigative tool to aid in a research project on integrated management of the SCFT that took place in Puerto Rico between 2014 and 2017. We used the model to assess the efficacy of tick suppression and probability of tick elimination when applying safer acaricides at 3-week intervals to different proportions of a herd of non-lactating dairy cattle. RESULTS: Probabilities of eliminating host-seeking larvae from the simulated system decreased from ≈ 1 to ≈ 0 as the percentage of cattle treated decreased from 65 to 45, with elimination probabilities ≈ 1 at higher treatment percentages and ≈ 0 at lower treatment percentages. For treatment percentages between 65% and 45%, a more rapid decline in elimination probabilities was predicted by the version of the model that produced higher densities of host-seeking larvae. Number of weeks after the first acaricide application to elimination of host-seeking larvae was variable among replicate simulations within treatment percentages, with within-treatment variation increasing markedly at treatment percentages ≤ 65. Number of weeks after first application to elimination generally varied between 30 and 40 weeks for those treatment percentages with elimination probabilities ≈ 1. CONCLUSIONS: Explicit simulation of the spatial and temporal dynamics of off-host (host-seeking) larvae in response to control methods should be an essential element of research that involves the evaluation of integrated SCFT management programmes. This approach could provide the basis to evaluate novel control technologies and to develop protocols for their cost-effective use with other treatment methods.


Assuntos
Acaricidas/administração & dosagem , Doenças dos Bovinos/parasitologia , Simulação por Computador , Rhipicephalus , Infestações por Carrapato/prevenção & controle , Infestações por Carrapato/veterinária , Acaricidas/economia , Animais , Vetores Artrópodes , Bovinos/parasitologia , Clima , Indústria de Laticínios , Feminino , Lactação , Larva , Gado/parasitologia , Porto Rico , Análise Espacial , Processos Estocásticos , Infestações por Carrapato/economia
9.
Acta Trop ; 194: 23-29, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30878470

RESUMO

Blastocystis sp. is frequently identified in a wide range of animal hosts, including bovids. Because of its burden and zoonotic potential, this parasite has been sought in domestic cattle from various countries, since this livestock may also represent a possible reservoir of human infection. However, epidemiological data regarding the prevalence and ST distribution of Blastocystis sp. in this animal group is lacking in Lebanon. Therefore, faecal samples were collected from a total of 254 dairy cattle raised on 55 farms located in the North Lebanon region and screened for the presence of the parasite by quantitative real-time PCR. The overall prevalence of Blastocystis sp. was shown to reach 63.4% in cattle livestock. Sequence analysis of positive samples indicated the presence of seven STs, with predominance of ST10 (44.0%) and ST14 (36.8%) and lower proportions of ST2 (8.0%), ST1 (7.2%), ST5 (2.4%), ST3 and ST7 (0.8% each). This survey was the first conducted worldwide reporting ST2 and ST7 in domestic cattle and confirmed that ST10 and ST14 represent cattle-adapted STs in view of their high prevalence. Faecal samples from in-contact dairy farmers and patients hospitalised in the same Lebanese governorate who reported no contact with cattle livestock were also analysed for the presence of Blastocystis sp. The same three STs were identified in both human cohorts, with predominance of ST3, followed either by ST1 or ST2 depending of the group. No other STs, including ST10 or ST14, have been reported. Moreover, even though ST1, ST2 and ST3 were found to be common to dairy cattle and farmers cohorts, only one ST3 isolate showed 100% sequence identity between both hosts. Consequently, the presence and low prevalence of ST1, ST2, ST3, ST5 and ST7 identified herein in domestic cattle, most of which exhibit low host specificity, could be derived from occasional direct exposure to faecal material from human and non-human hosts or by ingestion of contaminated drinking water or food in the enclosure of the farms. Together with the absence of ST10 and ST14 in the human population, these data suggest that cattle play a negligible role as zoonotic reservoirs of Blastocystis sp.


Assuntos
Infecções por Blastocystis/transmissão , Blastocystis/isolamento & purificação , Indústria de Laticínios , Fezes/parasitologia , Gado/parasitologia , Zoonoses/transmissão , Adulto , Idoso , Animais , Blastocystis/genética , Infecções por Blastocystis/parasitologia , Infecções por Blastocystis/veterinária , Bovinos , Fazendeiros , Feminino , Variação Genética , Humanos , Líbano/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Reação em Cadeia da Polimerase em Tempo Real , Adulto Jovem , Zoonoses/parasitologia
10.
Proc Natl Acad Sci U S A ; 115(45): 11495-11500, 2018 11 06.
Artigo em Inglês | MEDLINE | ID: mdl-30348781

RESUMO

Pork accounts for more than one-third of meat produced worldwide and is an important component of global food security, agricultural economies, and trade. Infectious diseases are among the primary constraints to swine production, and the globalization of the swine industry has contributed to the emergence and spread of pathogens. Despite the importance of infectious diseases to animal health and the stability and productivity of the global swine industry, pathogens of swine have never been reviewed at a global scale. Here, we build a holistic global picture of research on swine pathogens to enhance preparedness and understand patterns of emergence and spread. By conducting a scoping review of more than 57,000 publications across 50 years, we identify priority pathogens globally and regionally, and characterize geographic and temporal trends in research priorities. Of the 40 identified pathogens, publication rates for eight pathogens increased faster than overall trends, suggesting that these pathogens may be emerging or constitute an increasing threat. We also compared regional patterns of pathogen prioritization in the context of policy differences, history of outbreaks, and differing swine health challenges faced in regions where swine production has become more industrialized. We documented a general increasing trend in importance of zoonotic pathogens and show that structural changes in the industry related to intensive swine production shift pathogen prioritization. Multinational collaboration networks were strongly shaped by region, colonial ties, and pig trade networks. This review represents the most comprehensive overview of research on swine infectious diseases to date.


Assuntos
Infecções Bacterianas/veterinária , Doenças Transmissíveis Emergentes/veterinária , Doenças Parasitárias em Animais/epidemiologia , Doenças dos Suínos/epidemiologia , Viroses/veterinária , América/epidemiologia , Criação de Animais Domésticos/economia , Criação de Animais Domésticos/tendências , Animais , Ásia/epidemiologia , Austrália/epidemiologia , Infecções Bacterianas/microbiologia , Infecções Bacterianas/parasitologia , Infecções Bacterianas/virologia , Doenças Transmissíveis Emergentes/microbiologia , Doenças Transmissíveis Emergentes/parasitologia , Doenças Transmissíveis Emergentes/virologia , Europa (Continente)/epidemiologia , Saúde Global , Gado/microbiologia , Gado/parasitologia , Gado/virologia , Suínos , Doenças dos Suínos/microbiologia , Doenças dos Suínos/parasitologia , Doenças dos Suínos/virologia , Viroses/microbiologia , Viroses/parasitologia , Viroses/virologia , Zoonoses
11.
Trans R Soc Trop Med Hyg ; 111(6): 244-247, 2017 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-29044372

RESUMO

A One Health economic perspective allows informed decisions to be made regarding control priorities and/or implementation strategies for infectious diseases. Schistosomiasis is a major and highly resilient disease of both humans and livestock. The zoonotic component of transmission in sub-Saharan Africa appears to be more significant than previously assumed, and may thereby affect the recently revised WHO vision to eliminate schistosomiasis as a public health problem by 2025. Moreover, animal schistosomiasis is likely to be a significant cost to affected communities due to its direct and indirect impact on livelihoods. We argue here for a comprehensive evaluation of the economic burden of livestock and zoonotic schistosomiasis in sub-Saharan Africa in order to determine if extending treatment to include animal hosts in a One Health approach is economically, as well as epidemiologically, desirable.


Assuntos
Doenças dos Animais/tratamento farmacológico , Análise Custo-Benefício , Gado/parasitologia , Saúde Única/economia , Praziquantel/uso terapêutico , Saúde Pública/economia , Esquistossomose/tratamento farmacológico , África , Doenças dos Animais/economia , Doenças dos Animais/parasitologia , Doenças dos Animais/transmissão , Animais , Anti-Helmínticos/economia , Anti-Helmínticos/uso terapêutico , Humanos , Renda , Praziquantel/economia , Schistosoma , Esquistossomose/economia , Esquistossomose/transmissão , Esquistossomose/veterinária , Organização Mundial da Saúde , Zoonoses
12.
Trans R Soc Trop Med Hyg ; 111(6): 278-284, 2017 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-29044374

RESUMO

Background: At Lake Chad in Central Africa, mobile pastoralists face economic losses due to livestock trematodiases. Fasciola gigantica and Schistosoma bovis-trematodes that affect livestock-share transmission ecology traits with Schistosoma haematobium and S. mansoni that cause human schistosomiasis. This project aimed at assessing treatment strategies and elucidating the predictive potential of human and livestock trematode infections. Methods: Schistosomiasis and fascioliasis were investigated concurrently in humans and cattle by repeated cross-sectional surveys. Urine and stool samples from humans and faecal samples from cattle were examined for trematode eggs. Treatment strategies were assessed by means of focus group discussions and in-depth interviews. Results: Mobile pastoralists of four ethnic groups participated. Prevalence of human schistosomiasis and livestock trematodiases showed considerable heterogeneity from one ethnic group to another, but correlated within ethnic groups. Effective trematocidal drugs were not available in the study area. Conclusions: Mutual predictive potential of human schistosomiasis and livestock fascioliasis relates to distinct livestock husbandry practices. Introducing efficacious strategic treatment against human schistosomiasis and livestock fascioliasis might improve human and animal health and well-being. Our research provides evidence for the benefits of a One Health approach targeting diseases that share specific ecological traits.


Assuntos
Criação de Animais Domésticos , Doenças dos Bovinos/terapia , Atenção à Saúde/métodos , Etnicidade , Fasciolíase/terapia , Esquistossomose/terapia , Trematódeos , Animais , Bovinos , Doenças dos Bovinos/parasitologia , Doenças dos Bovinos/prevenção & controle , Chade , Estudos Transversais , Atenção à Saúde/normas , Fasciola , Fasciolíase/parasitologia , Fasciolíase/prevenção & controle , Fasciolíase/veterinária , Feminino , Humanos , Lagos , Gado/parasitologia , Masculino , Saúde Única , Prevalência , Schistosoma , Esquistossomose/etnologia , Esquistossomose/parasitologia , Esquistossomose/prevenção & controle , Especificidade da Espécie , Trematódeos/classificação , Infecções por Trematódeos , Zoonoses
13.
Acta Trop ; 176: 323-331, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28870536

RESUMO

Animal African Trypanosomiasis (AAT) is a disease of livestock that directly hinders livestock production and therefore impedes the socio-economic development of sub-Saharan Africa. The establishment of the Pan-African Tsetse and Trypanosomiasis Eradication Campaign (PATTEC) was to enhance the goal of elimination and eradication of tsetse flies and AAT from endemic countries in Africa. In order to achieve AAT eradication, a five-step progressive control pathway (PCP) model has been proposed. The data presented in this report demonstrates that Nigeria is highly endemic of AAT and that it is yet to comprehensively approach the process of eradication as it is at the infancy stage of data gathering and processing. This review is thus presented to serve as a wake-up call to all relevant stakeholders to intensify efforts in approaching the painstaking process of AAT eradication in Nigeria.


Assuntos
Erradicação de Doenças/organização & administração , Gado/parasitologia , Tripanossomíase Africana/epidemiologia , Tripanossomíase Africana/prevenção & controle , Moscas Tsé-Tsé/crescimento & desenvolvimento , Animais , Nigéria/epidemiologia
14.
Microb Pathog ; 109: 253-262, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28602837

RESUMO

Fasciolosis is an important plant borne trematode zoonosis in ruminants caused by the Fasciola hepatica and Fasciola gigentica, It is classified as a neglected tropical disease and found in more than 50 countries especially where sheep and cattle are reared. Fasciolosis is a serious animal health problems in many rural and urban areas of world, causing significant financial losses due to decrease in production and viscera condemnation in animals. Accurate diagnosis of fasciolosis is always remained a challenging task for the field practitioners. There is no comprehensive summary on the occurrence and distribution of the infection at international level. Therefore, we intended to provide a complete overview on the prevalence and epidemiology of fasciolosis in farm animals from a global prospective. It includes to map the global distribution of fasciolosis in different areas of the world to identify the endemic regions which may be a source of potential disease outbreak. The financial liability related to fasciolosis on the livestock production has also been addressed. For this purpose, the published data during 2000-2015 (15 years) on fasciolosis was reviewed and collected by electronic literature search of four databases including Google, PubMed, Science Direct, and Web of Science. Data presented are contemplated to enhance our current understanding of the parasite's geographical distribution, host range, and economic losses. Information provided would be useful for the application of more effective control strategies against fasciolosis in different geo-economics regions of the world.


Assuntos
Doenças dos Bovinos/economia , Doenças dos Bovinos/epidemiologia , Fasciolíase/economia , Fasciolíase/epidemiologia , Ruminantes/parasitologia , Animais , Animais Domésticos/parasitologia , Bovinos , Doenças dos Bovinos/parasitologia , Surtos de Doenças , Doenças Endêmicas , Fasciola hepatica , Fasciolíase/diagnóstico , Fasciolíase/parasitologia , Geografia , Especificidade de Hospedeiro , Gado/parasitologia , Prevalência , Estudos Prospectivos , Ovinos , Doenças dos Ovinos/epidemiologia , Doenças dos Ovinos/parasitologia , Zoonoses
15.
Infect Dis Poverty ; 6(1): 72, 2017 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-28330510

RESUMO

BACKGROUND: Schistosomiasis is a global snail-transmitted infectious disease of poverty. Transmission control had been achieved in China in 2015 after the control efforts for over 60 years. Currently, the remaining core regions endemic for Schistosoma japonicum are mainly located in the marshland and lake regions along the Yangtze River basin. METHODS: During the period from 2001 through 2015, an integrated environmental improvement of the marshlands was carried out through the implementation of industrial, agricultural and resources development projects in Yizheng County along the Yangtze River. S. japonicum infection in humans, livestock and snails was estimated by serology, stool examination, hatching technique and microscopy during the 15-year study period to evaluate the effect of the integrated environmental improvement on control and elimination of schistosomiasis. RESULTS: A 0.05% overall rate of S. japonicum infection was observed in snails during the 15-year study period, and no infected snails were detected since 2012. The overall prevalence of S. japonicum infection was 0.09% in humans during the study period, and no human infection was found since 2012. In addition, only 13 bovines were identified with S. japonicum infection in 2003 during the 15-year study period, and since 2004, no infection was found in livestock. CONCLUSION: The results of the present study demonstrate that the implementation of industrial, agricultural and water resources development projects, not only alters snail habitats in marshland regions, and promotes local economic development, which appears a win-to-win strategy to block the transmission of S. japonicum and accelerate socio-economic development along the Yangtze River.


Assuntos
Água Doce/parasitologia , Esquistossomose/prevenção & controle , Animais , Bovinos , China/epidemiologia , Erradicação de Doenças , Reservatórios de Doenças/parasitologia , Monitoramento Ambiental/métodos , Humanos , Gado/parasitologia , Prevalência , Rios , Schistosoma japonicum/isolamento & purificação , Esquistossomose/epidemiologia , Esquistossomose/transmissão , Esquistossomose Japônica/epidemiologia , Esquistossomose Japônica/prevenção & controle , Esquistossomose Japônica/transmissão , Caramujos/parasitologia , Áreas Alagadas
16.
Parasitology ; 144(1): 15-25, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27040969

RESUMO

Human population increases, with greater food demands, have resulted in a rapid evolution of livestock food systems, leading to changes in land and water use. The scale of global livestock systems mean that changes in animal health status, particularly in parasite levels, have impacts that go beyond farm and sector levels. To quantify the true impact of parasites in livestock, frameworks that look at both resources and services valued in markets and those that have no true market value are required. Mitigating the effects of parasitic disease in livestock will not only increase productivity, but also improve animal welfare and human health, whilst reducing the environmental burden of livestock production systems. To measure these potential benefits, a One Health approach is needed. This paper discusses the types of methods and the data collection tools needed for a more holistic perspective and provides a framework with its application to coccidiosis in poultry. To build a body of knowledge that allows the ranking of parasite diseases in a wider animal health setting, such One Health frameworks need to be applied more frequently and with rigour. The outcome will improve the allocation of resources to critical constraints on parasite management.


Assuntos
Criação de Animais Domésticos/economia , Saúde Global , Gado/parasitologia , Doenças Parasitárias em Animais , Criação de Animais Domésticos/normas , Criação de Animais Domésticos/estatística & dados numéricos , Animais , Coccidiose/epidemiologia , Coccidiose/parasitologia , Coccidiose/prevenção & controle , Coccidiose/veterinária , Efeitos Psicossociais da Doença , Países em Desenvolvimento , Meio Ambiente , Humanos , Doenças Parasitárias em Animais/epidemiologia , Doenças Parasitárias em Animais/parasitologia , Aves Domésticas/parasitologia
17.
Trends Parasitol ; 31(11): 527-530, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26604161

RESUMO

Parasitic diseases of humans and livestock are ubiquitous in the developing world and have substantial impacts on human wellbeing. For the estimated one billion people living in poverty who rely on livestock for their livelihoods, parasites steal valuable nutritional resources through multiple pathways. This diversion of nutrients ultimately contributes to chronic malnutrition, greater human disease burdens, and decreased productivity of both humans and livestock.


Assuntos
Gado/parasitologia , Doenças Parasitárias em Animais/economia , Pobreza , Criação de Animais Domésticos/economia , Animais , Países em Desenvolvimento/economia , Humanos , Valor Nutritivo
18.
Vet Parasitol ; 212(1-2): 62-7, 2015 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-26159836

RESUMO

Livestock farming is central to global food security and to the sustainability of rural communities throughout Europe. Animal health management has a major impact on farming efficiency. Although animal health research has provided effective prevention strategies for the major endemic diseases of livestock, these strategies typically provide solutions for single infectious diseases and they are often not adequately implemented due to farm-specific constraints. We propose a concept termed "ECONOHEALTH" which aims at including the economic and social context in our understanding of the factors that drive animal health. The concept is elaborated on using the example of the major helminthic diseases of cattle in temperate climate regions (gastrointestinal nematodes, liver fluke and lungworm). By considering major diseases simultaneously and placing disease-complexes in an economic and a social context, we believe that insights will be generated upon which more integrated, situation-adapted and thus more effective prevention strategies can be devised.


Assuntos
Criação de Animais Domésticos/economia , Criação de Animais Domésticos/normas , Helmintíase/economia , Helmintíase/prevenção & controle , Gado/parasitologia , Animais , Bovinos , Doenças dos Bovinos/parasitologia , Doenças dos Bovinos/prevenção & controle , Tomada de Decisões , Europa (Continente)
19.
Artigo em Chinês | MEDLINE | ID: mdl-26094407

RESUMO

OBJECTIVE: To investigate the correlations between inputs and costs and endemic situation of schistosomiasis in inner embankment, so as tb provide the references for the strategy optimization of schistosomiasis control. METHODS: Jiangling County was selected as the study field. The correlatibn and regression analyses were applied to analyze the endemic situation of schistosomiasis in Jiangling County from 2006 to 2013. The methods of two-stages least squares and path analysis were applied to analyze the impacts between costs and inputs and endemic situation of schistosomiasis. RESULTS: The adjusted infection rate of population, number of bovines and Oncomelania hupensis snail areas reduced by 77.42%, 76.34% and 19.43%, respectively in Jiangling County from 2006 to 2013. The correlations between the infection rate of snails and the population positive rates of blood and fecal exams, and the infection rate of bovines were significant (all P < 0.05); and there was a significant linear regression between the infection rates of snails and bovines (P < 0.05). There were statistically significant regressions between inputs at different levels and the population positive rates of blood and fecal exams, and the infection rates of bovines and snails, as well as between the costs and the population positive rate of fecal exams and the infection rates of bovines and snails (all P < 0.05), whereas there was no statistically significant regression between the costs and the population positive rate by blood exams (P > 0.05). The inputs at county level had an impact on the population positive rate of blood exams; the costs of comprehensive treatment had an impact on the population positive rate of fecal exams; the costs of human labor and measures for exams and treatments had an impact on the infeiction rate of bovines; the inputs at national level and the costs of measures for exams and treatments had an impact on the infection rate of snails (all P < 0.05). CONCLUSION: The inputs and costs of schistosomiasis control were related to the epidemic situation of schistosomiasis in Jiangling County from 2006 to 2013; therefore, it is necessary to develop a comprehensive surveillance system as substitute for the current indexes on schistosomiasis control.


Assuntos
Doenças dos Bovinos/economia , Doenças dos Bovinos/prevenção & controle , Controle de Doenças Transmissíveis/economia , Esquistossomose/economia , Esquistossomose/prevenção & controle , Adolescente , Adulto , Idoso , Animais , Bovinos , Doenças dos Bovinos/epidemiologia , Doenças dos Bovinos/parasitologia , Criança , China/epidemiologia , Controle de Doenças Transmissíveis/métodos , Reservatórios de Doenças/parasitologia , Fezes/parasitologia , Feminino , Humanos , Gado/parasitologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Schistosoma/fisiologia , Esquistossomose/epidemiologia , Esquistossomose/veterinária , Caramujos/crescimento & desenvolvimento , Caramujos/parasitologia , Áreas Alagadas , Adulto Jovem
20.
Prev Vet Med ; 113(1): 1-12, 2014 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-24148988

RESUMO

Cystic ehinococcosis (CE) caused by Echinococcus granulosus remains a neglected zoonotic disease despite its considerable human and animal health concerns. This is the first systematic analysis of the livestock and human related economic losses due to cystic echinococcosis in India. Data about human cases were obtained from a tertiary hospital. Human hydatidosis cases with and without surgical interventions were extrapolated to be 5647 and 17075 per year assuming a total human population of 1210193422 in India. Data about prevalence of hydatid cysts in important food producing animals were obtained from previously published abattoir based epidemiological surveys that reported a prevalence of 5.39% in cattle, 4.36% in buffaloes, 3.09% in pigs, 2.23% in sheep and 0.41% in goats. Animal population data were sourced from the latest census conducted by the Department of Animal Husbandry, Dairying and Fisheries, India. Other input parameters were obtained from published scientific literature. Probability distributions were included for many input values to account for variability and uncertainty. Sensitivity analyses were conducted to evaluate the effect of important parameters on the estimated economic losses. The analysis revealed a total annual median loss of Rs. 11.47 billion (approx. US $ 212.35 million). Cattle and buffalo industry accounted for most of the losses: 93.05% and 88.88% of the animal and total losses, respectively. Human hydatidosis related losses were estimated to be Rs. 472.72 million (approx. US $ 8.75 million) but are likely to be an under-estimate due to under-reporting of the disease in the country. The human losses more than quadrupled to Rs. 1953 million i.e. approx. US $ 36.17 million, when the prevalence of human undiagnosed cases was increased to 0.2% in the sensitivity analyses. The social loss and psychological distress were not taken into account for calculating human loss. The results highlight an urgent need for a science based policy to control and manage the disease in the country.


Assuntos
Equinococose/veterinária , Echinococcus granulosus/crescimento & desenvolvimento , Gado/parasitologia , Zoonoses/parasitologia , Animais , Simulação por Computador , Equinococose/economia , Equinococose/epidemiologia , Equinococose/parasitologia , Feminino , Humanos , Índia/epidemiologia , Masculino , Carne/parasitologia , Leite/parasitologia , Método de Monte Carlo , Prevalência , Zoonoses/economia , Zoonoses/epidemiologia
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