A more official source from the Israeli ministry of health: > Notably, Israel’s SARS-CoV-2 testing policy was different for unvaccinated and vaccinated indivi

A more official source from the Israeli ministry of health: > Notably, Israel’s SARS-CoV-2 testing policy was different for unvaccinated and vaccinated individuals during the study period. At 7 days after the second dose, vaccinated individuals were exempt from the SARS-CoV-2 testing required of individuals who either had contact with a laboratory-confirmed case or returned from travel abroad. This testing policy might have resulted in a differential bias that would cause over- estimation of vaccine effectiveness against asymp- tomatic infection (ie, asymptomatic people who received two doses were less likely to be tested than unvaccinated asymptomatic people). https://doi.org/10.1016/S0140-6736(21)00947-8 https://doi.org/10.1016/S0140-6736(21)00947-8