A phase 2/3, randomized, double-blind, double-dummy, placebo controlled study to evaluate the safety and efficacy of 2 regimens of orally administered PF 07321332/Ritonavir in preventing symptomatic SARS-COV-2 infection in adult household contacts of an individual with symptomatic COVID-19

Brief summary: The purpose of this study is to evaluate the efficacy and safety of PF-07321332/ritonavir as post-exposure prophylaxis for adult household contacts of a patient with COVID-19