@RokoMijic More than a Tweet to answer... Reduced odds of vaxxed person getting infected is main factor, but also somewhat reduces odds of vaxxed + infected transmitting onward- Vars incl waning antibodies over time, which vax, Delta variant, level of contact (household vs community)...
@RokoMijic Israel (Pfizer) pre-delta 88.5% overall reduction in transmission https://www.medrxiv.org/content/10.1101/2021.07.13.21260393v1
@RokoMijic "Effectiveness of full vaccination of the index against transmission to unvaccinated household contacts was 63% (95%CI 46-75%)." https://www.medrxiv.org/content/10.1101/2021.10.14.21264959v1