| Texto completo | |
| Autor(es): |
de Lima, Lucas Nascimento
;
Reis, Daniel Costa
;
Sakano, Victor Keniti
;
Franco, Marco Aurelio
;
Morais, Fernando Goncalves
;
John, Vanderley Moacyr
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PUBLIC HEALTH; v. 205, p. 9-pg., 2022-04-01. |
| Resumo | |
Objectives: This study evaluates the performance of eight non-professional face masks sold in Sao Paulo, Brazil, to prevent aerial transmission of the SARS-CoV-2. Study design: This was a case report with comparative testing. Methods: The masks manufactured with different materials and designs were quantified according to their performance to prevent COVID-19 using two indicators: filtration efficiency (FE) and differential pressure. The fabric grammage and microscopy of the layers were analyzed to understand their influence on the performance indicators. Results: The results show no correlation between grammage in the FE and increasing grammage can compromise breathability indicator. Masks manufactured with cotton widely commercialized during the pandemic have non-uniformized results in FE indicators. Conclusions: There was no evidence between grammage and the number of layers in the FE indicator. The results pointed out that the layer's composition and the microstructure are the best way to evaluate the performance of non-professional masks used to prevent the aerial transmission of the SARS-CoV-2. (C) 2022 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 14/50948-3 - INCT 2014: tecnologias ecoeficientes avançadas em produtos cimentícios |
| Beneficiário: | Vanderley Moacyr John |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 17/17047-0 - O ciclo de vida de aerossóis e nuvens na Amazônia: emissões biogênicas, emissões de queimadas e impactos no ecossistema |
| Beneficiário: | Paulo Eduardo Artaxo Netto |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático |