title: Prevalence of anti HAV in children two years after an hepatitis A outbreak.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000914:Antibodies, Viral / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D006506:Hepatitis A / Q000276:immunology*; D006507:Hepatovirus; D006801:Humans; D007223:Infant; D013997:Time Factors
chemical_list: D000914:Antibodies, Viral