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Message: [QUOTE="JustbrewitMan, post: 3483224, member: 7806"] So here's the next COVID-19 thing that will probably make the "hype train" rounds on social media: [B][I][COLOR=rgb(184, 49, 47)][SIZE=5]Does your blood type (A, B, AB, O) affect your risks of getting COVID-19 infection and does it determine if you'll have more severe infection?[/SIZE][/COLOR][/I][/B] A recently-uploaded [B][I]pre-peer-reviewed[/I][/B] article from China suggests that Blood Type "A" patients were over-represented in both the COVID-19 cases and the severe cases they analyzed (compared to the normal population distributions of blood type). There were fewer Type "O" patients that had more severe infections. [URL unfurl="true"]https://www.medrxiv.org/content/10.1101/2020.03.11.20031096v1[/URL] Not surprisingly a number of virtual "information" outlets have started running with it (and misinterpreting info, over-extrapolating info): [URL unfurl="true"]https://www.scmp.com/news/china/society/article/3075567/people-blood-type-may-be-more-vulnerable-coronavirus-china-study[/URL] [URL unfurl="true"]https://news.abplive.com/health/coronavirus-outbreak-blood-type-a-more-vulnerable-to-covid-19-study-1176984[/URL] [URL unfurl="true"]https://gulfnews.com/world/asia/coronavirus-your-blood-type-may-make-you-more-vulnerable-says-study-1.1584446718257[/URL] ***Keep this in mind: A quick inspection of case rates and mortality rates amongst countries with fairly high prevalence of A blood type folks seems to fly against this hypothesis. If this was a strong factor, we might expect high overall case #'s and high case fatality rates: [URL unfurl="true"]https://en.wikipedia.org/wiki/Blood_type_distribution_by_country#ABO_and_distribution_by_country[/URL] [ATTACH type="full"]52086[/ATTACH] For example: Norway: 3 deaths, 1438 cases Switzerland: 26 deaths, 2650 cases Portugal: 1 death, 448 cases Total for these countries = 0.66% CFR There are definitely some "higher Type "A" countries" with higher case fatality rates, but keep in mind that there are probably [B][I]MANY [/I][/B]other layered factors to consider that are impacting infection rates and severe infection rates... [B][I]At this point, I would not be panicking or taking more protective measures if I were a Type "A" blood type person (which I am). [/I][/B] But as with everything, we need to keep an eye on it am re-examine these possible hypotheses as the pandemic continues... Best, JBM [/QUOTE]

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