A Survery for Immunity Against Rubella in 10-19 Year Old Women in Chahar -Mahal -E -Bakhtiari Province of IRAN

Summary In order to determine the immunity state against Rubella in 10-19 year old women in urban and rural area of Chahar -Mahal Bakhtiari province of IRAN in act 1992. We have done a cross sectional seroepidemiologic study in 1347 women. This study showed a high rate of immunity against Rubella in this province. About 90.5% of studied population had protective antibody titer against Rubella with H.I Method. This high rate of immunity was due to spontaneous occurance of disease. According to similar results of previous studies that were done in this subject, it seems necessary to make attention to prevalence of  Rubella, in other part of country. With the increase of age the rate of immune persons was increased as well, and rural area in comparison to urban area has benefited from higher percentage of immunity. In the cases we studied the highest titer of immunitywas 1/40 -1/80, and the lowest was≻1/640 It is recommended that although high level of spontaneous immunity against Rubella, in order to prevent congenital Rubella syndrome and its complications the doing a test for anti Rubella antibody among the premarriage routine test is included and the negative cases should guided for Rubella vaccination.