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A comment on Covid vaccination linked to 'substantial reduction' in hospital admissions. Parent comment

Re:Covid vaccination linked to 'substantial reduction' in ho... by learc83 on Monday February 22, 2021 @12:09PM (#26226989)
You have a control group of unvaccinated people.
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Re:Covid vaccination linked to 'substantial reduction' in ho... by ssully on Monday February 22, 2021 @12:13PM (#26227050)
These people are starting to get vaccinated now though[1], which actually causes issues with the study.

[1]:https://www.npr.org/sections/health-shots/2021/02/19/9691430...

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Re:Covid vaccination linked to 'substantial reduction' in ho... by ceejayoz on Monday February 22, 2021 @12:16PM (#26227098)
That's the clinical trials, but it should be reasonably straightforward to do observational studies on COVID hospitalizations cross-referenced with vaccine status.

There are plenty of millions of people who haven't yet (or won't ever) get vaccinated to serve as a control.

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