Comparative study of the acquisition of antibody to Norwalk virus in pediatric populations.
Analysis by radioimmunoassay of pediatric sera from three populations showed that antibody to Norwalk virus is acquired at a significantly earlier age in a less developed and tropical area (Philippines) than in two more developed and nontropical countries (United States and Taiwan).
D000367:Age Factors; D000914:Antibodies, Viral / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010679:Philippines; D011336:Probability; D011863:Radioimmunoassay; D012209:Rhabdoviridae / Q000276:immunology*; D013624:Taiwan; D014481:United States
D000914:Antibodies, Viral