Abstract
This is a cross sectional study conducted on 3862 basic schools children from Wad Medani during the school year 2000-2001. The aim was to determine the EPI immunization coverage with emphasis on the changing pattern of measles among them. They were selected by multiple stratified proportional random sampling according to their sex and localities. The data collected from the parents of the children by trained medical personnel. They utilized a tested questionnaire through a pilot study conducted two months prior to the study. It was addressing the immunization status of the pupils as registered and the history of some common. diseases including measles. The case definition of each disease including measles was clarified. The study revealed that the immunization coverage against the six childhood diseases were above eighty, it was 83% against measles but still below, the target put by EPI program (900/o). 10.4% of the whole studied group reported measles however 12.4% among those who were vaccinated, reported measles. Such an increase in case despite high immunization coverage is in conformity with Gezira EPI records during 1995-2000. The fact measles affect elder children are noticed in other countries such as Egypt, this may resuscitate another· dose of measles at pre-school age in Sudan.