Covid-19: Does the blood type make a difference?

	Covid-19
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Covid-19: Does the blood type make a difference?
(as of July 2020)
Here are the studies that showed higher risk for people with Type A blood:

Mar 11: Peng Wang's team in Shenzhen reports that individuals with Type A blood are at higher risk of both contracting covid-19 and of dying of it than individuals with Type O blood (paper)
Apr 8: Michael Zietz and Nicholas Tatonetti at Columbia University report that individuals with Type A blood are more likely to contract covid-19 than individuals with Type O or AB blood (paper)
Jun 17: David Ellinghaus and others in Germany report a higher risk for severe illness among individuals with Type A blood and a protective effect for Type O blood (paper)
But then in July 2020 a study by Massachusetts General Hospital found no correlation between blood type and chances of catching covid-19.
See also:
Back to FAQ/ Q&A about Covid-19,
Data on Covid-19 and selected sources,
Covid-19: How it may change the World,
The Clown & the Virus,
The Clown & the Virus - Part 2,
Trump's Virus,
Sinophobia & Covid-19,
Sinophobia & Covid-19 in US Media,
Was covid-19 made in the USA? in China? TM, ®, Copyright © 2020 Piero Scaruffi All rights reserved.
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