Association of ABO blood groups with presentation and outcomes of confirmed SARS CoV-2 infection: A prospective study in the largest COVID-19 dedicated hospital in Bangladesh

Background: Different studies in worldwide showed conflicting results on association of Blood groups on SARS Cov-2 infection.

Objective:  To observe the association of ABO blood groups on the presentation and outcomes of confirmed COVID -19 cases.

Design, Setting, and Participants: This was a Prospective cohort study of the patients with mild to moderately severe COVID -19 infections, presented in the COVID-19 unit of Dhaka Medical College Hospital. Participants were enrolled from 01 June to 25 august, 2020. Patient were followed up for at least 30 days after the onset of the disease. For the estimation we grouped A positive and A negative blood group into group-1 and other blood groups into group II.

Results: Total 438 patients were included in the cohort, 52 patients lost to follow up, 5 died and 381 patients completed the study. Prevalence of Blood group A [144(32.9 %)] was significantly higher among COVID-19 patients than the general population (p < 0.001).The Presenting...