RESUMO
AIMS: Estimating the force of hepatitis A virus (HAV) infection concerning a 1- to 15-year-old child population being attended at six healthcare centres in Colombia by applying catalytic models. METHODS: Anti-HAV seroprevalence was estimated in 2,152 patients attending six health centres in 5 Colombian cities; based on such estimation, the force of infection and average age of infection were obtained for each region. RESULTS: The 1- to 4-year-old age group's force of infection was 0.15 in Barranquilla; for the other cities the force of infection was 0.02 in Bogotá for the 5- to 15-year-old age group and 0.06 in Medellin for the 1- to 9-year-old age group. Average infection age in Bogotá, Bucaramanga, Cali and Medellin was 10.68 to 11.97 years-old. CONCLUSION: There was high anti-HAV prevalence in the young-adult population, average infection age being 10.69 to 11.97 years-old, thereby presenting a similar pattern to that of developing regions having intermediate level of endemicity.
Assuntos
Hepatite A/epidemiologia , Adolescente , Distribuição por Idade , Criança , Pré-Escolar , Colômbia/epidemiologia , Feminino , Hepatite A/diagnóstico , Humanos , Lactente , Masculino , Modelos Biológicos , Modelos Estatísticos , Estudos SoroepidemiológicosRESUMO
Objetivo Estimar la fuerza de infección de hepatitis A en la población de niños entre 1 a 15 años de edad que asistieron a seis centros de salud en Colombia entre el año 2007 y 2008, aplicando modelos catalíticos. Métodos En 2 152 pacientes de seis centros de salud en cinco ciudades de Colombia se estimó la seroprevalencia de anticuerpos contra el virus de la Hepatitis A (anti-VHA) por grupos de edad. Con base en esta estimación, se obtuvo la fuerza de infección y la edad promedio de infección para cada región ajustando modelos catalíticos. Resultados La fuerza de infección fue de 0,15 en el grupo de 1 a 4 años en Barranquilla. En el resto de ciudades la fuerza de infección tomó valores entre 0,02 para Bogotá en el grupo de 5 a 15 años, y 0,06 para Medellín en el grupo de 1 a 9 años. La edad promedio de infección en Bogotá, Bucaramanga, Cali y Medellín estuvo entre 10,7 y 12,0 años. Conclusión En Bogotá, Bucaramanga, Cali y Medellín se estimaron seroprevalencia de anti-VHA entre 26,3 % y 40,4 % en el grupo de 10 a 15 años, con una edad promedio de infección entre 10,7 y 12,0 años; comportamiento semejante a la de regiones en desarrollo con endemicidad intermedia.
Aims Estimating the force of hepatitis A virus (HAV) infection concerning a 1- to 15-year-old child population being attended at six healthcare centres in Colombia by applying catalytic models. Methods Anti-HAV seroprevalence was estimated in 2,152 patients attending six health centres in 5 Colombian cities; based on such estimation, the force of infection and average age of infection were obtained for each region. Results The 1- to 4-year-old age group’s force of infection was 0.15 in Barranquilla; for the other cities the force of infection was 0.02 in Bogotá for the 5- to 15-year-old age group and 0.06 in Medellin for the 1- to 9-year-old age group. Average infection age in Bogotá, Bucaramanga, Cali and Medellin was 10.68 to 11.97 years-old. Conclusion There was high anti-HAV prevalence in the young-adult population, average infection age being 10.69 to 11.97 years-old, thereby presenting a similar pattern to that of developing regions having intermediate level of endemicity.
