ABO Blood Group Association With COVID-19 Mortality

Akhlaq, Hira; Tizro, Parastou; Aggarwal, Anita; Nava, Victor E.

doi:10.14740/jh993

Cited by 1 publication

(1 citation statement)

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“…However, others have estimated a higher SARS-CoV-2 risk in subjects with B or AB groups [ 12 ]. On the other hand, no associations were described among hospitalizations, severity, and death of COVID-19 cases and ABO [ 13 , 14 , 15 , 16 , 17 , 18 ], but some exceptions have been reported [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

ABO Blood Groups and Incidence of COVID-19 in the Mass Gathering Events in Borriana (Spain), March 2020: A Retrospective Cohort Study

et al. 2023

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Our objective was to estimate the incidence of COVID-19 and the ABO blood Groups in the mass-gathering events (MGEs) during the Falles Festival in Borriana (Spain) from 6–10 March 2020. We conducted a population-based retrospective cohort study and measured anti-SARS-CoV-2 antibodies and the ABO of participants. We performed laboratory COVID-19 tests and obtained the ABO in 775 subjects (72.8% of the original exposed cohort): O-group (45.2%), A-group (43.1%), B-group (8.5%) and AB-group (3.4%). Adjusted for confounding factors, including COVID-19 exposure during the MGEs, attack rates of COVID-19 for each ABO group were 55.4%, 59.6%, 60.2%, and 63.7%. The adjusted relative risks were for O-group 0.93 (95% Confidence Interval [CI] 0.83–1.04), for A-group 1.06 (95% CI 0.94–1.18), for B-group 1.04 (95%CI 0.88–1.24), and for AB-group 1.11 (95% CI 0.81–1.51) with no significant differences. Conclusions: Our results suggest no effect of ABO on COVID-19 incidence. We observed weak but not significant protection of the O-group and not a significantly greater infection risk for the remaining groups compared with the O-group. More studies are needed to resolve the controversies regarding the association between ABO and COVID-19.

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