Considerations for quarantine of contacts of COVID-19 cases

This document is an update of interim guidance entitled Considerations for quarantine of individuals in the context of containment for coronavirus disease (COVID-19), published on 19 March 2020. This version is restricted to the use of quarantine for contacts of confirmed or probable cases of COVID-19. It provides updated guidance for the implementation of quarantine, as well as additional guidance on ventilation and on the care of children in quarantine. The update is based on evidence on controlling the spread of SARS-CoV-2, the virus that causes COVID-19, and scientific knowledge of the virus.