Face Masks To Prevent COVID-19: A Critical Appraisal Of Current Evidence

Abstract

Background: Face-masks have been one of the pillars for reducing the spread of COVID-19 by limiting exposure to SARS-CoV-2. However, the effectiveness of face-masks has frequently been the focus of debate among scientists and the general public.Types of studies reviewed: This mini-review presents a critical analysis of factors that influence the effectiveness of face-masks on disease transmission, their benefits and side effects for adults and children, and their impact on the environment. These topics are summarized based on the most relevant research available in the literature. Results:The mask type, fitting, behavior, and hygiene affect filtration efficiency. Cloth masks present low protection, and poor hygiene can increase the risk of infection. Surgical masks present moderate protection, with respirators such as N95 presenting the highest protection. Prolonged use of face masks and respirators can alter respiratory patterns, with the potential to cause side effects in adults and children. Practical implications: In the context of disease transmission, surgical and cloth masks protect for minutes,