What on earth? Yes they did, all along.
December 2020:
> Fauci Predicts U.S. Could See Signs Of Herd Immunity By Late March Or Early April
https://www.npr.org/sections/coronavirus-live-updates/2020/1...
> "I would say 50% would have to get vaccinated before you start to see an impact," Fauci said. "But I would say 75 to 85% would have to get vaccinated if you want to have that blanket of herd immunity."
Talking about herd immunity is definitely saying immunity, and doesn't make sense unless the vaccine prevented transmission.
Then, May 2021:
> Masks off? Fauci confirms ‘extremely low’ risk of transmission, infection for vaccinated
https://www.msnbc.com/all-in/watch/dr-fauci-confirms-extreme...
(I am vaccinated btw)
https://www.nytimes.com/2021/02/23/opinion/covid-vaccines-tr... "Many scientists are reluctant to say with certainty that the vaccines prevent transmission of the virus from one person to another. [. . .] There should be more data within the next couple of months. Until then, precautionary measures like masking and distancing in the presence of unvaccinated people will remain important."
FWIW, it seems like those commentators who were actually right until Delta emerged. Looking at graph of Covid cases in the USA for example we were on track to low case levels until July, then the Delta variant began to break through in vaccinated individuals and the epidemic grew in size again.
Gotta compare 2021 to the the curves from 2020 though: It's the same shape with different magnitude. Looks more like that drop in the spring and early summer was because it's seasonal than anything else, which we misattributed to the vaccines.
- vaccination is a risk reducer on severity of infection. Nobody said immunity; nobody said prevention.
- and on that point not getting into the hospital is important. From a management standpoint, we've got to insure demand for hospital resources does not dwarf those same resources. That's the key management function here.