DOI: 10.36347/sjams.2019.v07i06.026

Pages: 2164-2167

Introduction: The ABO, Rhesus and Kell systems are the most immunogenic systems in blood transfusion. Today, there are more than 29 blood group systems in humans, which confirm human polymorphism. The objective of our work is to present the phenotypic prevalence of ABO, Rhesus and Kell systems at the HMMI of Meknes, using a sample of blood donors composed of healthy soldiers; and also to allow a better estimation of the frequencies of the antigens (C, c, E and e). Materials and methods: This is a retrospective study spread over 9 years (2010-2018), involving 18,168, active and healthy, and military volunteer blood donors. The data was collected and used from the records of the transfusion service of the Moulay Ismail Military Hospital in Meknes (HMIM). Samples are taken at military establishments. The ABO, Rhesus and Kell grouping is performed by agglutination tests using Bio-rad® reagents on plate and gel cards. Results: 96% of blood donors are male, aged between 18 and 54 years old. The calculation of phenotypic prevalence for the ABO system showed that group O is present in almost half of the people (48.50%), followed in descending order by group A (34.08%), group B (14.18%), then the AB group (3.24%). With regard to the Rh system, the positive RH phenotype is predominant with 90.04%. For the extended RH system antigens, the results are as follows: C (67.30%), c (83.15%), E (21.29%) and e (92.44%). The prevalence of the K positive phenotype is 9.15%. Discussion and conclusion: The analysis of these results in relation to the review of the national and international literature shows that Morocco is in an intermediate position between the countries of the European and African continents.