Decreased infectivity following BNT162b2 vaccination: A prospective cohort study in Israel

To assess effectiveness of the vaccine in reducing infectivity via two routes: through preventing infection, and through reducing viral shedding in those who become infected despite vaccination.

为评估疫苗通过两种途径降低病毒感染性的有效性：其一为阻断感染，其二为在即便完成疫苗接种后仍发生感染的人群中减少病毒排毒（viral shedding）。