Serologic survey of hepatitis A antibodies in Mexican children.
D000914:Antibodies, Viral / Q000302:isolation & purification; D002648:Child; D002675:Child, Preschool; D006506:Hepatitis A / Q000453:epidemiology* / Q000276:immunology; D006507:Hepatovirus / Q000276:immunology; D006801:Humans; D007223:Infant; D008800:Mexico; D012959:Socioeconomic Factors
D000914:Antibodies, Viral