Determination of the Frequencies of ABO and Rhesus Phenotypes in Elbagara Ethnic Group

Abstract

This study was performed in Elbagara ethnic group in the period between 15/5/2005-15/9/2005. One hundred samples were collected in EDTA containers to determine the frequencies of ABO and Rhesus phenotypes and Rhesus gene complexes. Blood samples wee tested by the slide method, tube method, and ID-card method. The results were analyzed using the SPSS software program. In the ABO blood group system the highest frequency was group O (50%), then group A (26%), followed by group B (20%), and group AB (4%). The most frequently occurring antigens of the Rhesus blood group system were found to be c and e (100%), followed by D (90%), C (31%), and finally E (15%). The most frequently phenotype in the Rhesus system was found to be cDe (48%), followed by CcDe (27%), cDEe (12%), cde (9%), CcDEe (3%), and Ccde (1%) respectively. Thirty samples were tested by both the slide and ID-card technique to make a comparison between the two methods and the same results were obtained. The conclusion: Rh-E negative antigen was detected in 85% of Bagara individuals, Rh-C negative antigen in 69%, Rh-D negative in 10%. The recommendation: Future studies should be done using a larger number of samples on other tribes in Sudan to determine the most common Sudanese genotypes.