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Study finds no relationship between blood type and severity of COVID-19

Study finds no relationship between blood type and severity of COVID-19

Blood type is not associated with a severe worsening of symptoms in people who have tested positive for COVID-19, researchers from Massachusetts General Hospital (MGH) have reported, dispelling previous reports that suggested a correlation between certain blood type and COVID-19. A study published in Annals of Hematology did find, however, that symptomatic individuals with blood types B and AB who were Rh+ were more likely to test positive for COVID-19, while those with blood type O were less likely to test positive.