Answers are grounded in this paper and cite their sources.
Several studies report high effectiveness of COVID-19 vaccines against SARS-CoV-2 infection and severe disease, however an important knowledge gap is the vaccine effectiveness against transmission (VET). We present estimates of the VET to household and other close contacts in the Netherlands, from February to May 2021, using contact monitoring data. The secondary attack rate among household contacts was lower for fully vaccinated than unvaccinated index cases (11% vs 31%), with an adjusted VET of 71% (95% confidence interval: 63-77).
No takes yet. Share an insight, caveat, or question.
Gier et al. (2021) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: