Background The pandemic of COVID-19 is growing, and a shortage of masks and
respirators has been reported globally. Policies of health organizations for healthcare …

Objective Previous meta‐analyses concluded that there was insufficient evidence to
determine the effect of N95 respirators. We aimed to assess the effectiveness of N95 …

Background This document provides advice on the use of masks in communities, during
home care, and in health care settings in areas that have reported cases of COVID-19. It is …

There were 3 influenza pandemics in the 20th century, and there has been 1 so far in the
21st century. Local, national, and international health authorities regularly update their plans …

An update is available for this article. Background: Recommendations on masks for
preventing coronavirus disease 2019 (COVID-19) vary. Purpose: To examine the …

Novel Coronavirus (COVID-19) emerged in China in December 2019 and as of 3rd March
2020, more than 90,800 cases and 3100 deaths have been reported from 72 countries …

Background Evidence for face-mask wearing in the community to protect against respiratory
disease is unclear. Aim To assess effectiveness of wearing face masks in the community to …

The current pandemic of COVID-19 has lead to conflicting opinions on whether wearing
facemasks outside of health care facilities protects against the infection. To better …

Background This article responds to one by Graham Martin and colleagues, who offered a
critique of my previous publications on face coverings for the lay public in the Covid‐19 …

Since the beginning of the COVID-19 pandemic, there has been intense debate over SARS-
CoV-2's mode of transmission and appropriate personal protective equipment for health …