This study was conducted to evaluate the anti-measles IgG antibody (AMAb) titers of measles vaccinated and non vaccinated normal individuals in Al-Najaf Governorate. "ELISA" test was applied to test 375 collected sera samples during April to November 2006. Individuals included with age range (1-30) years; 335 of them were vaccinated, and 40 non vaccinated (control group).Age, sex, residency and history of measles vaccination were recorded for each individual. The results revealed; that the highest IgG titer (234.82) had been seen in age group (A, age rang 1-6 year) and the titer was decreasing with increasing of age and reaching to the lowest IgG titer (6.6087) in age group (E, age range 25-30 year). The residency and sex of individuals was showed no significant differences(p >0.01) in AMAb IgG titers.
