People with type O blood may be less likely to contract COVID-19 or suffer severe symptoms related to the illness, according to two studies published Wednesday.
In the first, Danish researchers analyzed a sample of 7,422 people who tested positive for the virus and found that only 38 percent had type O blood, according to research published in the journal Blood Advances.
Meanwhile, 44 percent of people with type A blood had contracted the deadly bug.
In the second study, published in the same journal, Canadian researchers found that critically ill COVID-19 patients with blood types O or B had a median intensive care unit stay of 9 days. By contrast, people with A or AB blood stayed 13.5 days.
The researchers also found that 61 percent of critically ill patients with O or B blood types had to be hooked up to ventilators — significantly less than the 84 percent of people with A or AB blood types