Title : The association of ABO and Rh blood groups with Covid-19 of Al-Duloiya population in Salah Al-Din Governorate / Iraq

The proportion of blood group AB in patients with Covid- 19 was higher than that in healthy control. The risk for AB blood group individuals to acquire Covid – 19 infection was higher with a relative risk of AB (RR = 1.808). in addition blood group O in patients with Covid – 19 was lower than in healthy individuals. The risk ratio of O (RR = 0.901). From the other hand, Rhˉ blood group in patients with Covid – 19 was clearly higher than that in healthy individuals. The risk of Rhˉ blood group individuals was higher with an (RR = 2.256) compared with of Rh⁺ blood group with relative risk (RR = 0.856).