3694 Control (Wuhan area)
A: 1188 (32.16%)
B: 920 (24.90%)
AB: 336 (9.10%)
O: 1250 (33.84%)
COVID-19 1888 patients
A: 715 (37.87%)
B: 494 (26.17%)
AB: 193 (10.22%)
O: 486 (25.74%)
The difference may be related to triaging criteria. E.g. different ethnic groups overrepresented in given hospital.
edit: added wikipedia link
"ABO group in 3694 normal people in Wuhan showed a distribution of 32.16%, 24.90%, 9.10% and 33.84% for A, B, AB and O, respectively"
Not peer reviewed, but an interesting observation nevertheless. There will be more data soon.
I’m not saying it’s at the same standard as being peer reviewed, though it’s more likely than not that the conclusions from this data will remain true based on both the data and the correlation.
For future reference, Hacker News guidelines call for using the article's original title as the title of the submission. https://news.ycombinator.com/newsguidelines.html (the moderators seem to have fixed this for you)