title: Seroepidemiology of varicella.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000914:Antibodies, Viral / Q000032:analysis*; D002644:Chickenpox / Q000453:epidemiology* / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D014645:Herpesvirus 3, Human / Q000276:immunology; D006801:Humans; D007223:Infant; D014861:Washington
chemical_list: D000914:Antibodies, Viral