摘要：The evaluation of immune status to measles among school children in south of Tehran, blood samples were collected from 375 randomly selected school children of elementary schools, Junior high schools and high schools. The measurement of measles antibody titer was made by haemagglutination inhibition test, with antibody titer > 1/4 considered as positive. Among 375 school children, 6% of them were seronegative but with antibody titers ~ 1/8 as positive, seronegativity rates increases to 20%. The most susceptible age groups were 10-12 years old.
