This study of actual transmission seems to indicate a substantial reduction in transmission from vaccinated people. But that benefit also seems to fade. I don’t know if the fading is real or how much is from confounding effects (like more and more “unvaccinated” having immunity from prior infection). Someone with more experience in these types of studies than I could dig into that.
This study of actual transmission seems to indicate a substantial reduction in transmission from vaccinated people. But that benefit also seems to fade. I don’t know if the fading is real or how much is from confounding effects (like more and more “unvaccinated” having immunity from prior infection). Someone with more experience in these types of studies than I could dig into that.
https://www.medrxiv.org/content/10.1101/2021.09.28.21264260v1