Development and Validation of a Food Frequency Questionnaire to Estimate Intake among Children and Adolescents in Urban Peru.

Tools to assess intake among children in Latin America are limited. We developed and assessed the reproducibility and validity of a semi-quantitative food frequency questionnaire (FFQ) administered to children, adolescents, and their caregivers in Lima, Peru. We conducted 24-h diet recalls (DRs) and focus groups to develop a locally-tailored FFQ prototype for children aged 0-14 years. To validate the FFQ, we administered two FFQs and three DRs to children and/or their caregivers (N = 120) over six months. We examined FFQ reproducibility by quartile agreement and Pearson correlation coefficients, and validity by quartile agreement and correlation with DRs. For reproducibility, quartile agreement ranged from 60-77% with correlations highest for vitamins A and C (0.31). Age-adjusted correlations for the mean DR and the second-administered FFQ were highest in the 0-7 age group, in which the majority of caregivers completed the FFQ on behalf of the child (total fat; 0.67) and in the 8-14 age group, in which both the child and caregiver completed the FFQ together (calcium, niacin; 0.54); correlations were <0.10 for most nutrients in the 8-14 age group in which the caregiver completed the FFQ on the child's behalf. The FFQ was reproducible and the first developed and validated to assess various nutrients in children and adolescents in Peru.

Conocimiento del consumo de ácido fólico y su relación con los defectos del tubo neural en mujeres puérperas / Knowledge of folic acid and its relationship with neuraltube defects in postpartum women

Los defectos del tubo neural (DTN) incluyen un amplio espectro de malformaciones congénitas. La más frecuente es la espina bífida abierta que cursa con grados variables de parálisis de las extremidades inferiores y alteraciones vesicales e intestinales. Actualmente se pueden reducir los DTN mediante el ácido fólico (AF). El objetivo principal de este estudio fue determinar el conocimiento periconcepcional de AF. Se realizó un cuestionario a 800 mujeres puérperas, internadas en la Cátedra de Ginecología y Obstetricia - Facultad de Ciencias Médicas, Cruz Roja Paraguaya y Hospital San Pablo (ambos MSP y BS), desde el 1 de febrero al 31 de noviembre de 2003. La mayoría tenía entre 20 y 24 años (29,8%); cursaron el bachillerato 54,3%. El embarazo fue planificado en 21,8%. A la pregunta "ha oído hablar del AF" 66 (8,2%) de las 800 puérperas respondieron afirmativamente. De éstas, 50 (75,6% de este subgrupo) sabían que es una vitamina, 39 (59,1%) que el AF es útil para prevenir los DTN y 26 (39,4%) que se debe consumir desde antes de comenzar el embarazo. Este estudio mostró bajo nivel de conocimientos de las puérperas sobre lo que es y los beneficios del AF en la prevención primaria de los DTN, lo que evidencia la importancia de insistir en programas de información y educación sanitaria, a toda mujer en edad fértil aunque no planee su embarazo, sobre esta medida de prevención primaria de los DTN.

Neural tube defects (NTDs) include a wide spectrum of congenital malformations. Themost common is the open spina bifida that occurs with varying degrees of paralysis of thelower extremities and bladder and bowel disorders. Currently it is possible to reduce NTDsby folic acid (FA). The main objective or this study was to determine periconceptionalknowledge of FA. We applied a questionnaire to 800 postpartum women, hospitalized in 3different hospitals of Asunción-Paraguay, Hospital de Clínicas (Department of Gynecologyand Obstetrics), Paraguayan Red Cross and Hospital San Pablo (MSP y BS), from February1 to November 31, 2003. Most were between 20 and 24 years (29,8%), 54.3% had a bachelor degree. The pregnancy was planned in 21.8%. To the question "did you hearabout FA" 66 (8.2%) of the 800 postpartum women responded affirmatively. Of these, 50(75.6% of this subgroup) knew it is a vitamin, 39 (59.1%) know that FA is useful toprevent NTDs and 26 (39.4%) that should be consumed before the beginning of thepregnancy. In this study, unprecedented in Paraguay, postpartum women had very littleknowledge about what is and the benefits of FA in the primary prevention of NTDs, whichshows the importance of insisting on programs and health education information to allwomen of reproductive age.

Uso de plantas medicinales por parte de las madres, para el tratamiento de enfermedades de sus hijos. CAPS el Chorrillo y CAPS el Volcán. San Luis. Mayo-julio 2013

Conocer el uso de plantas medicinales por parte de las madres para el tratamiento de enfermedades de sus hijos. Material y métodos: La población se conformó por 142 madres de niños de 0 a 14 años que consultaron en el CAPS ”El Chorrillo” y CAPS “El Volcán” de la provincia de San Luis, desde el 21 de mayo al 25 de julio de 2013. Dada la magnitud poblacional se trabajó con una muestra accidental. Los datos se recolectaron mediante la técnica de entrevista, utilizándose como instrumento el cuestionario. Los datos de las variables en estudio, volcados en soporte magnético, fueron analizados mediante la versión actualizada del programa Statistic Package for Social Science (software estadístico SPSS) y ordenados en tablas frecuenciales simples y de contingencia que facilitan el entrecruzamiento de variables.

Objective: To know the use of medicinal plants from the mothers for the treatment of their children’s illnesses. Material and methods: The population was comprised of 142 mothers of children aged 0 to 14 years who consulted in CAPS “El Chorrillo” and CAPS “El Volcan” of San Luis city, between May 21 and July 25, year 2013. To given the magnitude of the population, not sample with some. Data were collected by interview technique used as an instrument the questionnaire. The data of the study variables focused on magnetic media, were analyzed using the updated version of the program: Statistic Package for Social Science (SPSS statistical software) and arranged in simple tables and contingency frequentials that facilitate cross-linking of variables.

Relación de antecedentes académicos y expectativas iniciales con el bienestar académico de alumnos de primer año de medicina / Relationship between previous academics background and initial expectations with academic well-being of first year of medical students

Introducción: Los estudiantes de primer año de medicina deben afrontar altas exigencias académicas y personales que influyen en el bienestar y el desempeño académico. Esta investigación analiza la relación de los antecedentes académicos y las expectativas académicas iniciales con el bienestar académico de alumnos de primer año de medicina. Sujetos y métodos: Estudio cuantitativo, transversal y correlacional. Se aplicaron los cuestionarios UWES-S17, MBI-HSS e involucramiento académico, versión expectativas. Se obtienen los antecedentes académicos y sociodemográficos de una base de datos oficial. Resultados: Se encontró una relación directa entre las notas de enseñanza media y la dimensión de involucramiento en los estudios del compromiso académico (engagement), una relación inversa con la falta de realización personal del desgaste académico (burnout) y relaciones directas entre las tres dimensiones de las expectativas académicas y el compromiso académico e inversas con la dimensión falta de realización personal del desgaste académico. Conclusión: Tanto los antecedentes académicos previos como las expectativas académicas iniciales se relacionan con el bienestar académico tras el primer semestre

Introduction: First year medical students face personal and high academic standards impacting the well-being and academic performance. This research examines the relationship of the academic background and the initial academic expectations with the academic well-being of first year medical students. Subjects and methods: Quantitative, transversal and correlational study. Applied the questionnaire UWES-S17, MBI-HSS and Academic Involvement, version Expectations. Academic and socio-demographic basis of official data are obtained. Results: We found direct relationships between the high school grades and dimension of involvement in studies of the academic engagement and inverse with the lack of fulfillment of academic burnout and direct relationships between the three dimensions of the academic expectations and academic engagement and reverse with the lack of personal fulfillment dimension of academic burnout. Conclusion: Both the previous academic background and initial academic expectations relate to the academic well-being after the first semester

Vigilancia de influenza en Chile: 2010 / Influenza surveillance in Chile: 2010

Se analizó el comportamiento de la influenza en el 2010, a través de los componentes de la vigilancia. Desde la semana epidemiológica (SE) 32 aumenta la notificación de ETI en los centinela, con un máximo de casos en la SE 37 (tasa 80 por 105), inferior a 2009. Este aumento coincide con el alza de las consultas respiratorias (especialmente infecciones respiratorias agudas altas e influenza) que llega a 43 por ciento en la SE 36. Destaca la cocirculación de influenza AH1N1 (2009) y H3N2, con predominio de esta última y un máximo en la SE 36. La gravedad (hospitalizaciones por infecciones respiratorias agudas graves y fallecidos) fue menor que en 2009 y se concentró en los casos de H3N2. El aumento observado el 2010 fue de intensidad elevada, de carácter epidémico, y se desplazó a los meses de agosto-septiembre. Se requiere mantener y reforzar los componentes de la vigilancia influenza en el actual período pospandémico.

It was analyzed the 2010 influenza behaviour through surveillance components. Since epidemiologic week (EW) 32, influenza like disease notification increases in sentinel centers, with a maximum of cases on EW 37 (rate of 80 per 105), less than2009. This increase coincide with the rise in respiratory hospital visits (especially upper acute respiratory infections) reaching 43 percent on EW 36. it is registered co-circulation of influenza AH1N1 (2009) and H3N2, the last prevailing over the first one anda maximum on EW 36. Severity (severe acute respiratory infections hospitalizations and deaths) was lower than 2009 and was concentrated in H3N2 cases. The observed increase in 2010 was of high intensity, epidemic nature and shifted to August-September. It is required maintaining and reinforcing influenza surveillance components, in the current pos-pandemic period.

Certificación de la eliminación de sarampión, rubéola y SRC en Chile / Certification of elimination of measles, rubella and CRS in Chile

Debido al éxito en la eliminación del sarampión, rubéola y Síndrome Rubéola Congénito alcanzado en América, la Organización Panamericana de la Salud solicitó verificar la eliminación de estas enfermedades en los países de la región. Chile ratificó mediante Resolución a un comité nacional de expertos que revisó la información entregada por los equipos técnicos, en los siguientes componentes: epidemiología del sarampión, rubéola y SRC; calidad de la vigilancia; epidemiología molecular; sostenibilidad del programa de inmunizaciones y cohortes de población vacunada. La información obtenida de diversas fuentes permitió integrar la evidencia y determinar si los datos eran válidos, completos, representativos y consistentes. Esta publicación describe las etapas de la certificación y la información evaluada por el comité nacional ad hoc. Sus conclusiones serán ratificadas por el comité internacional, el que certificará si Chile cumple con los criterios para la eliminación, proceso que se espera culmine en diciembre 2011. Debido al constante riesgo de importación de estos virus desde otras partes del mundo, persisten muchos retos para mantener la eliminación en el tiempo.

Due to the success in the elimination of measles, rubella and CRS reached in the Americas, PAHO requested the verification of the elimination of these diseases in the countries of the region. Chile ratified by means of a resolution a National Committee of Experts, which revised the information provided by the technical teams in the following components: Epidemiology of measles, rubella and CRS; quality of the surveillance; molecular epidemiology; sustainability of the Immunization Program and cohorts of vaccinated population. The information gathered from different sources allowed to integrate the evidence provided and to determine if the data were valid, complete, representatives and consistent. In this paper we describe thecertification steps and the information evaluated by the ad-hoc national committee. Their conclusions will be ratified by the International Committee, which will certify if Chile fulfills the criteria for elimination, a process that is expected to end during December 2011.

[Genetic characterization of the virus causing H1N1 influenza pandemic in Chile: analysis of the first detected cases]. / Inicio del brote de Influenza A (H1N1) pandémica en Chile: caracterización genética de los primeros casos detectados.

BACKGROUND: Following the announcement of the Influenza A(H1N1) pandemic by the World Health Organization in April 2009, a surveillance program was carried out in Chile to detect the introduction of the virus in the country and to monitor its propagation and impact. AIM: To describe the onset of the outbreak and the genetic characterization of the pandemic H1N1 influenza virus in the first detected cases in Chile. MATERIAL AND METHODS: Analysis of18 clinical samples coming from suspicious patients, received in a National Reference Laboratory. RNA reverse transcription and real time influenza gene DNA amplification was carried out in a 7500 Fast and Step One Real Time PCR Systems of Applied Biosystems and MxPro-Mx3000P thermocycler from Stratagene. Super Script III Platinum One-Step Quantitative RT-PCR was used. RESULTS: The virus was first detected in three persons returning from the Dominican Republic via Panamá and a child from the east zone of Santiago. Genetic characterization of the virus showed that the child was infected by a different variant of the pandemic virus than the three persons returning from the Caribbean. CONCLUSIONS: The onset of the Influenza outbreak in Chile apparently carne from two different epidemiological groups. The spread of the virus detected in the voyagers was limited immediately However the virus of the fourth case was found in different regions of Chile.

Virologic surveillance for wild-type rubella viruses in the Americas.

The goal of eliminating rubella from the Americas by 2010 was established in 2003. Subsequently, a systematic nomenclature for wild-type rubella viruses (wtRVs) was established, wtRVs circulating in the region were catalogued, and importations of wtRVs into a number of countries were documented. The geographic distribution of wtRVs of various genotypes in the Americas, interpreted in the context of the global distribution of these viruses, contributed to the documentation of rubella elimination from some countries. Data from virologic surveillance also contributed to the conclusion that viruses of genotype 2B began circulating endemically in the Americas during 2006-2007. Viruses of one genotype (1C), which are restricted to the Americas, will likely disappear completely from the world as they are eliminated from the Americas. Efforts to expand virologic surveillance for wtRVs in the Americas will also provide additional data aiding the elimination of rubella from the region. For example, identification of vaccine virus in specimens from rash and fever cases found during elimination can identify such cases as vaccine associated.

Rubella outbreaks following virus importations: the experience of Chile.

BACKGROUND: Strategies for accelerated control of rubella and congenital rubella syndrome (CRS) in Chile included mass vaccination of women of childbearing age in 1999 but did not include vaccination of adult men. METHODS: We reviewed data from Chile's integrated surveillance system for measles, rubella, and CRS from 2004 through 2009 and describe the epidemiology of rubella outbreaks and implementation of control measures in 2005 and 2007 following mass vaccination of women. Population estimates from census data were used to calculate rubella incidence rates. The age distribution of rubella cases during 2007 was compared with rubella vaccination opportunities by birth cohort to orient mass vaccination of adult men. RESULTS: In 2005, an institutional outbreak of rubella occurred among male naval recruits 18-22 years of age, with 46 confirmed cases over a 5-month period. Beginning in March 2007, rubella outbreaks among young adults in the capital of Santiago spread throughout Chile, resulting in >4000 confirmed rubella cases. Delayed control measures and rapid dissemination among young adults led to widespread transmission. From 2007 through 2009, rubella incidence was highest among adult men not included in previous vaccination strategies. Mass vaccination of men 19-29 years of age was conducted in November 2007 to interrupt rubella transmission. CONCLUSIONS: Chile's experience suggests that vaccination strategies for rubella and CRS elimination need to include both men and women.

Inicio del brote de Influenza A (H1N1) pandémica en Chile: caracterización genética de los primeros casos detectados / Genetic characterization of the virus causing H1N1 influenza pandemic in Chile: Analysis of the first detected cases

Background: Following the announcement of the Influenza A(H1N1) pandemic by the World Health Organization in April 2009, a surveillance program was carried out in Chile to detect the introduction of the virus in the country and to monitor its propagation and impact. Aim: To describe the onset of the outbreak and the genetic characterization of the pandemic H1N1 influenza virus in the first detected cases in Chile. Material and Methods: Analysis of18 clinical samples coming from suspicious patients, received in a National Reference Laboratory. RNA reverse transcription and real time influenza gene DNA amplification was carried out in a 7500 Fast and Step One Real Time PCR Systems of Applied Biosystems and MxPro-Mx3000P thermocycler from Stratagene. Super Script III Platinum One-Step Quantitative RT-PCR was used. Results: The virus was first detected in three persons returning from the Dominican Republic via Panamá and a child from the east zone of Santiago. Genetic characterization of the virus showed that the child was infected by a different variant of the pandemic virus than the three persons returning from the Caribbean. Conclusions: The onset of the Influenza outbreak in Chile apparently carne from two different epidemiological groups. The spread of the virus detected in the voyagers was limited immediately However the virus of the fourth case was found in different regions of Chile.

Epidemiologic and virologic assessment of the 2009 influenza A (H1N1) pandemic on selected temperate countries in the Southern Hemisphere: Argentina, Australia, Chile, New Zealand and South Africa.

UNLABELLED: INTRODUCTION AND SETTING: Our analysis compares the most comprehensive epidemiologic and virologic surveillance data compiled to date for laboratory-confirmed H1N1pdm patients between 1 April 2009 - 31 January 2010 from five temperate countries in the Southern Hemisphere-Argentina, Australia, Chile, New Zealand, and South Africa. OBJECTIVE: We evaluate transmission dynamics, indicators of severity, and describe the co-circulation of H1N1pdm with seasonal influenza viruses. RESULTS: In the five countries, H1N1pdm became the predominant influenza strain within weeks of initial detection. South Africa was unique, first experiencing a seasonal H3N2 wave, followed by a distinct H1N1pdm wave. Compared with the 2007 and 2008 influenza seasons, the peak of influenza-like illness (ILI) activity in four of the five countries was 3-6 times higher with peak ILI consultation rates ranging from 35/1,000 consultations/week in Australia to 275/100,000 population/week in New Zealand. Transmission was similar in all countries with the reproductive rate ranging from 1.2-1.6. The median age of patients in all countries increased with increasing severity of disease, 4-14% of all hospitalized cases required critical care, and 26-68% of fatal patients were reported to have ≥1 chronic medical condition. Compared with seasonal influenza, there was a notable downward shift in age among severe cases with the highest population-based hospitalization rates among children <5 years old. National population-based mortality rates ranged from 0.8-1.5/100,000. CONCLUSIONS: The difficulty experienced in tracking the progress of the pandemic globally, estimating its severity early on, and comparing information across countries argues for improved routine surveillance and standardization of investigative approaches and data reporting methods.

Albores de la medicina venezolana / The beginnings of the Venezuelan medicine

Mostra la historia de la medicina Venezolana desde la época precolombina hasta el descubrimiento de Venezuela en 1498. (AU)

Etiología de las infecciones agudas del tracto respiratorio bajo (IRAB) en lactantes hospitalizados: estudios virológicos / Virological studies in infants with low respiratory tract infections and in healthy controls

Se analizan los estudios virológicos practicados en un grupo de 112 lactantes menores de 1 año hospitalizados por infección respiratoria aguda del tracto respiratorio bajo y en un grupo de 41 controles de igual edad. En todos se tomaron muestras de aspirado nasofaríngeo realizándose frotis para inmunofluorescencia (VRS, P3, Ad) y aislamiento viral y en 38 casos muestras pareadas para serología. En 72,3% de los pacientes la investigación virológica fué positiva, demostrándose en 82,7% de ellos VRS y en 16,0% virus asociados. Se destaca la alta frecuencia del VRS. En el grupo control el estudio virológico fué positivo en 36,6% de los casos, detectándose citomegalovirus y VRS fundamentalmente. Estos resultados confirman la importancia del VRS en la bronconeumonía del lactante menor de un año