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Aug 11, 2020 · Type O blood may have a protective effect against COVID-19. Most data shows there's no difference in COVID-19 susceptibility among people with A, AB, and B blood types. Ongoing research indicates that people with type O blood seem to have a slightly lower risk of contracting COVID-19.
- Anisa Arsenault
Oct 2, 2023 · It’s not totally clear. Some studies have concluded that people with blood Type O may be less likely to get COVID. But more research is needed. In a 2020 study of nearly half a million people, those with blood Type O had a lower risk of getting infected with the virus that causes COVID.
May 25, 2022 · Some research findings have suggested that people with blood types A and AB are more susceptible to contracting COVID-19, while those with blood type O are less likely to test...
Jan 13, 2021 · Patients with type O and rhesus negative (Rh-) blood groups may have a lower risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and severe coronavirus disease 2019 (COVID-19) illness, according to a study published in the Annals of Internal Medicine.
Jul 17, 2020 · The study did find, however, that symptomatic individuals with blood types B and AB who were Rh positive were more likely to test positive for COVID-19, while those with blood type O were less likely to test positive.
Blood group O was associated with a lower risk of COVID-19 than blood groups A, B, and AB. High titers of preexisting natural anti-A antibodies, found in people with type O and type B blood, and anti-B antibodies, found in people with type O and type A blood, also were associated with a lower risk of COVID-19.
Jul 18, 2021 · The authors found that individuals with type O blood were less likely to contract SARS-CoV-2 compared with non–type O blood groups (ARR = 0.88; 95% confidence interval [CI], 0.84–0.92). Rhesus (Rh)-negative individuals were also less likely to be diagnosed with SARS-CoV-2 (ARR = 0.79; 95% CI, 0.73–0.85).
