The researchers found that gene variants in 2 regions of the human genome were associated with severe COVID-19 and a greater risk of dying from it. In June, a group of scientists from Europe and Australia reported the results of a study comparing genome data from 1610 patients with severe COVID- healthy blood donors. Some researchers have picked up the gauntlet laid down by the researchers in China, but their findings haven’t been consistent. Although preliminary, they said they hoped their finding would encourage further investigation. The researchers found that type O blood was associated with a lower risk for COVID-19, while type A blood was associated with a higher risk. They compared the ABO blood group distribution in 2173 patients with COVID-19 from 3 hospitals in Wuhan and Shenzhen, China, with that in the general population in those regions. In a 2005 research letter in JAMA, the researchers reported that the health care professionals with type O blood were less likely to have become infected than those with other blood types.įifteen years later, in an article that wasn’t peer-reviewed, scientists in China reported similar associations between blood type and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Of the 45, 34 had serologically confirmed SARS-CoV. Spurred by the research linking blood type to susceptibility to the norovirus and H pylori infections, Hong Kong scientists looked for a link between blood type and SARS-CoV infection in 45 physicians, nurses, medical students, and allied health staff who had been exposed to an infected patient. The first inkling of an association between blood type and coronavirus infection came during the outbreak of the first severe acute respiratory syndrome coronavirus (SARS-CoV), which began in late 2002.
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