3 ms·
> CDC says vaccines are only 66 percent effective at preventing Delta infection WITH A 95% CONFIDENCE INTERVAL OF 26% TO 84% They only statistically modeled h
by lamontcg 5y ago
> CDC says vaccines are only 66 percent effective at preventing Delta infection
WITH A 95% CONFIDENCE INTERVAL OF 26% TO 84%
They only statistically modeled how much their unvaccinated population was already recovered from coronavirus based on estimates of community spread, among other issues with that number.
https://www.cdc.gov/mmwr/volumes/70/wr/mm7034e4.htm https://www.cdc.gov/mmwr/volumes/70/wr/mm7034e4.htm
And when you have a CI of something like that size, of course you wind up in the middle of it -- the actual value could very well be closer to 80% due to systematic uncertainties in the modeling.
- disgruntledphd2 5y agoOr 30%, to be fair.
- lamontcg 5y agopublished on the CDC site today: 77% (74%-80%) VE for pfizer and 92% (89%-93%) VE for moderna. With only some evidence of reduced VE against delta and/or waning in those > 75 years old: https://www.cdc.gov/mmwr/volumes/70/wr/mm7037e2.htm https://www.cdc.gov/mmwr/volumes/70/wr/mm7037e2.htm
- disgruntledphd2 5y agoThat's a very reassuring result, thanks for sharing. Interesting that moderna continues to do better, and looking forward to seeing the studies VE versus time since vaccination.