Introduction: The purpose of our study is presenting new national statistics of phenotypic prevalence Rhesus systems (Rh) and Kell using a new sample of blood donors.
Materials and Methods:This study was conducted in the blood transfusion department of the Avicenna military hospital of Marrakech on a sample of 1286 donors collected between 01/01/2015 and 31/12/2015. This is a military population dominated by men (99%), and composed of young people aged from 18 to 45 years. The samples have been collected in EDTA tubes. The tests were performed on gel-card or on opaline plate at the laboratory temperature. Reagents used are monoclonal antibodies from Society Bio-Rad.
Results : Our results shows a clear predominance of the Rh1 (D) positive (89.81%) compared to Rh-1 (d) negative (10.19%). CcDee was the most common phenotype (38.95%) followed by ccDee (18.91%) CCDee, ccDEe, ccdee and CcDEe. The ccDEE, CCDEe and ccdEe phenotypes are the minority phenotypes. For the Kell system, the predominance of Kell-1 subjects was clearly observed at a frequency of 93%. The Rh D allele was the most prevalent (68.08%) among RH blood type alleles while and the Kell-1 (96.44%) was the frequent among the alleles of Kell blood group system.
Discussion and Conclusion : our results compared to previous national and international studies show that Morocco is in an intermediate situation among the Caucasoid and negroids populations.