Quote:

“Scientists who compared the genes of thousands of patients in Europe found that those who had Type A blood were more likely to have severe disease while those with Type O were less likely.”

 

https://www.dailymail.co.uk/health/article-8434167/Study-ties-blood-type-COVID-19-risk-O-help-A-hurt.html
 

Previous articles:

 

Tests in China reported on:

https://www.dailymail.co.uk/sciencetech/article-8122493/People-Type-blood-likely-catch-coronavirus.html
 

“DNA may make people with Type A blood who catch coronavirus 50% more likely to need oxygen or ventilator support, study suggests”

https://www.dailymail.co.uk/health/article-8388505/DNA-make-people-Type-blood-vulnerable-coronavirus.html

 

 

“Could your blood type help protect you from coronavirus? People with Type O are nearly 20% LESS likely to test positive for COVID-19, 23andMe study of 750,000 people finds“

 

https://www.dailymail.co.uk/health/article-8404117/People-O-type-blood-nearly-20-likely-test-positive-coronavirus-study-suggests.html

It would have been expecting too much of a newspaper like the UK's Daily Mail to give a link to the published study mentioned in their article. Here is the link to the study published in the New England Medical Journal (NEMJ)

 

https://www.nejm.org/doi/full/10.1056/NEJMoa2020283