07.04.20
Effectiveness of Surgical and Cotton Masks in Blocking SARS–CoV-2: A Controlled Comparison in 4 Patients
Vorph "ги́ря" Valknut
Porque é um tema que me tem preocupado e desesperado como cidadão atento e licenciado em ciências médicas, deixo aqui mais outro ensaio (não representativo, nem muito menos definitivo, em virtude da fraca amostragem). Ainda assim considero, pessoalmente, um absurdo compararmos máscaras médicas com écharpes e cachecóis.
This experiment did not include N95 masks and does not reflect the actual transmission of infection from patients with COVID-19 wearing different types of masks. We do not know whether masks shorten the travel distance of droplets during coughing. Further study is needed to recommend whether face masks decrease transmission of virus from asymptomatic individuals or those with suspected COVID-19 who are not coughing.
In conclusion, both surgical and cotton masks seem to be ineffective in preventing the dissemination of SARS–CoV-2 from the coughs of patients with COVID-19 to the environment and external mask surface.
Estudo realizado pela Annals of Internal Medicine.