[Seroepidemiologic study of measles in 2 populations of children under 10 years of age from the metropolitan area].
Measles antibodies were investigated by direct immunofluorescence in 274 samples from infants and 245 samples of children from 1 to 10 years of age. Antibodies were present in 74% of children under 3 months of age, decreasing to 42% at age 11 months. Positive results were obtained in 60% of children from 1 to 4 years of age, decreasing to 47% from 5 to 10 years of age. Overall, infants had 64% positive tests and children 54%. Accordingly, a greater susceptibility to infection by measles is found in infants above 3 months of age and children from 5 to 10 years of age.
Ramírez
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E
Sección Virología, Instituto de Salud Pública de Chile, Santiago.
Espiñeira
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E
D000367:Age Factors; D000914:Antibodies, Viral / Q000097:blood*; D002648:Child; D002675:Child, Preschool; D002677:Chile / Q000453:epidemiology; D004198:Disease Susceptibility; D005455:Fluorescent Antibody Technique; D006801:Humans; D007223:Infant; D008457:Measles / Q000097:blood / Q000453:epidemiology* / Q000276:immunology; D008459:Measles virus / Q000276:immunology*; D016036:Seroepidemiologic Studies; D014505:Urban Population
D000914:Antibodies, Viral
Estudio seroepidemiológico del sarampión en dos poblaciones de niños menores de 10 años de edad del área metropolitana.