Advice on the use of masks in the context of COVID-19: interim guidance, 6 April 2020

Citation
World Health Organization. (2020). Advice on the use of masks in the context of COVID-19: interim guidance, 6 April 2020. World Health Organization. https://iris.who.int/handle/10665/331693. License: CC BY-NC-SA 3.0 IGO
Description
5 p.The Portuguese version is published by PAHO: https://iris.paho.org/handle/10665.2/51994
This version was updated on 5 June: https://apps.who.int/iris/handle/10665/332293
Document number
WHO/2019-nCov/IPC_Masks/2020.3Language
Englishportuguês
русский
العربية