title: Development of immunity against hepatitis A virus by subclinical infection.
mesh_terms: D000328:Adult; D000410:Alanine Transaminase / Q000097:blood; D000914:Antibodies, Viral / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006506:Hepatitis A / Q000097:blood / Q000276:immunology*; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis; D007223:Infant; D008297:Male; D008875:Middle Aged
chemical_list: D000914:Antibodies, Viral; D007075:Immunoglobulin M; D000410:Alanine Transaminase