In addition to the direct effects of preventing cases and reducing severity, we have shown that both the ChAdOx1 nCoV-19 and BNT162b2 vaccines are associated with reduced likelihood of household transmission by 40-50% from individuals diagnosed with COVID-19 after vaccination, highlighting important wider benefits to close contacts. While this analysis was primarily intended to understand impacts on transmission to household contacts rather than those outside the household, the former are consis…