People with this blood type are less likely to test positive for COVID-19

The data was gathered in a preliminary study of more than 750,000 participants

Coronavirus has affected people in many different ways. Some experience a slew of symptoms, some just a few and others may be asymptomatic.

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As scientists and medical professionals learn about the virus, a new study by 23andMe sheds light on which blood type is more or less likely to contract COVID-19.

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The data gathered from the preliminary study of more than 750,000 participants shows the O blood type appears to be protective against the virus when compared to all other blood types. They are between 9-to-18 percent percent less likely than individuals with other blood types to have tested positive for COVID-19, according to the data.

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The percent of respondents reporting a positive test for COVID-19 was highest among those with the AB blood type.

There was little differences in susceptibility between the other blood types.

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And the findings still hold when adjusted for age, sex, body mass index, ethnicity, and co-morbidities.

23andMe is looking to include 100,000 people in the study.

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Both the data on blood type and the preliminary genetic findings also appear to support at least two recently published pre-print studies — one by researchers in China and the most recent one by researchers in Italy and Spain that have looed at a certain gene's role in Covid-19.