einstein (São Paulo). 10/Feb/2025;23:eCE1532.
Comment to: Factors affecting SARS-CoV-2 transmission among face mask users
DOI: 10.31744/einstein_journal/2025CE1532
Dear Editor,
We read with interest the article by Costa et al.,() which demonstrated that individuals who consistently wear face masks have a lower likelihood of carrying a high viral load after contracting severe acute respiratory coronavirus 2 (SARS-CoV-2) infection compared to those who do not regularly wear masks. This finding strongly supports the recommendation of face mask usage during periods of high viral circulation in outdoor crowded places, particularly among individuals at higher risk of developing more aggressive forms of coronavirus disease 2019 (COVID-19), such as frail and immunocompromised people. However, some methodological considerations merit attention.
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