Thread by @AstorAaron

Here you go: The Pfizer vaccine prevents infection, not just symptomatic illness. 14 days after 2nd dose, over 95% effective at preventing infection. And if you aren't infected, you cannot spread it to others.

https://twitter.com/ariehkovler/status/1363171631703687171

It's hard to overstate how important this is. If vaccinated people neither get infected nor spread the virus to others, there is no reason to demand extra mitigation efforts from those already vaccinated (two weeks after 2nd dose).

There will obviously be more studies done on this. And we'll see if this level is replicated with the Moderna vaccine. There has been spotty evidence so far that the mRNA vaccines do prevent infection (in addition to prevent symptomatic disease) but this is a bigger result.

Wider Israeli data shows vaccinated infection prevented at closer to 90%. Follow-up study might tick it down a couple more points. Still, this is amazing. With this level of infection prevention, transmission among the vaccinated will be extremely rare.

https://twitter.com/business/status/1363460186711744512?s=20

Another study by Mayo Clinic, using Moderna as well, showing similar efficacy in stopping infection and transmission.

https://twitter.com/AaronRichterman/status/1362357363919970306?s=20