Anthony Stephen Fauci, Carole Johnson, Marcella Nunez-Smith, Rochelle Paula Walensky, and Jeffrey Dunston Zients, Press Briefing by White House COVID-19 Response Team and Public Health Officials… (2021)
“ And the question is — we do know now that we have a 94 to 95 percent efficacy in preventing clinically recognizable disease, but the looming question is: If a person gets infected, despite the fact that they’ve been vaccinated — we refer to that as a “breakthrough infection” — does that person have the capability of transmitting the infection to another person? Namely, does vaccine prevent transmission? ”
