Blood group O decreases risk of COVID-19

Objectives:
At present, existing evidence about the association between SARS-CoV-2 (COVID-19) infection and ABO blood group polymorphism is preliminary and controversial. Therefore, this review article has been conducted.

Is ABO blood group associated with SARS-CoV-2 (COVID-19) risk?  

Study design:
This review article included 7 studies with a total of 13 subgroups of populations (7,503 COVID-19 positive cases and 2,962,160 controls).

Results and conclusions:   
The investigators found that COVID-19 positive individuals were more likely to have blood group A [pooled OR = 1.23, 95% CI = 1.09 to 1.40] and less likely to have blood group O [pooled OR = 0.77, 95% CI = 0.67 to 0.88].

The investigators concluded blood group A increases risk of COVID-19, while blood group O decreases risk of COVID-19.

Original title:
The association between ABO blood group and SARS-CoV-2 infection: A meta-analysis by Golinelli D, Boetto E, […], Fantini MP.

Link:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0239508

Additional information of El Mondo:
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