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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.
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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).
Although some studies have found no relationship between blood type and COVID-19 risk, none has linked type O to a higher risk of SARS-CoV-2 infection. Why would blood group make any difference to SARS-CoV-2? Several new studies offer possible explanations.
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.
Nov 29, 2023 · Bloomberg Several studies have now shown that people with blood type O are less susceptible to contracting Covid, and those with blood type A are more likely to get it. In the early days of the pandemic, those findings were hotly debated.
Apr 4, 2023 · Several studies suggest that people with blood type O and people who are Rh-negative have less chance of testing positive for COVID-19. These studies indicate that these individuals also have less severe symptoms if they do get infected with the coronavirus.
Jun 30, 2022 · The bottom line on blood type and Covid risk. People with Type O blood might be slightly more protected from the virus, and people with Type A slightly more vulnerable.
