viral antibodies in preschool children

one hundred sera from children 1 - 6 years of age, representative of a large serum collection, were tested for the prevalence of antibodies against different viruses. hemagglutination-inhibition (hi) antibodies were found in 68% for measles; 61 % for rubella; 75'% for influenza a2/hong kong/68, 16% for influenza b/md./59, 0% for group a arboviruses, 10% for group b arboviruses, 3% for phlebotomus fever group and 4% for congo-crimean hemorrhagic fever (c-chf) group of arboviruses poliomyelitis-neutralizing antibodies for type 1, 2 and 3 were 90%; 85% and 84%~ respectively. antibody to eh virus was detected in 84% of the sera by immuno-fluorescence. none of the sera were positive for hepatitis-b antigen or antibody by immuno-precipitation test. the prevalence of some viral antibodies found in this survey are compared with results obtained from surveys in other parts of the country.