COVID-19: What we talk about when we talk about masks

Abstract

Even though most current recommendations include the general use of masks to prevent community transmission of SARS-Cov-2, the effectiveness of this measure is still debated. The studies on this policy include physical filtering tests with inanimate microparticles, randomized clinical trials, observational studies, ecological analyses, and even computational modeling of epidemics. Much of the so-called evidence is inferred from studies on different respiratory viruses and epidemiological settings. Heterogeneity is a major factor limiting the generalization of inferences. In this article, we reviewed the empirical and rational bases of mask use and how to understand these recommendations compared to other policies of social distancing, restrictions on non-essential services, and lockdown. We conclude that recent studies suggest a synergistic effect of the use of masks and social distancing rather than opposing effects of the two recommendations. Developing social communication approaches that clarify the need to combine different strategies is a challenge for public health authorities.

Prevalence of virological and serological markers of SARS-CoV-2 infection in the population of Ribeirão Preto, Southeast Brazil: an epidemiological survey

“…Despite its moderate infectivity, the viral ability to spread may be predominantly attributed to its broad spectrum of clinical manifestations 2 , 5 , 6 . For this reason, social distancing measures have been proposed by several countries to control virus dissemination, in addition to standard infection prevention and control measures such as hand hygiene and wear masks 7 . Social distancing is considered the most effective measure for reducing the spread of SARS-CoV-2 infection, preventing health services from becoming overwhelmed, and, thus, preventing an increase in mortality.…”

Impacto de la introducción del cubrebocas contra el COVID-19: una revisión narrativa.

“…Por último, diversos grupos alrededor del mundo han rechazado el uso masivo del cubrebocas (51). Para esto, la comunicación social debe combinar estrategias: un desafío entre las autoridades en salud pública.…”