| Full text | |
| Author(s): |
de Lima, Lucas Nascimento
;
Reis, Daniel Costa
;
Sakano, Victor Keniti
;
Franco, Marco Aurelio
;
Morais, Fernando Goncalves
;
John, Vanderley Moacyr
Total Authors: 6
|
| Document type: | Journal article |
| Source: | PUBLIC HEALTH; v. 205, p. 9-pg., 2022-04-01. |
| Abstract | |
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) | |
| FAPESP's process: | 14/50948-3 - INCT 2014: advanced eco-efficient technologies in cementitious products |
| Grantee: | Vanderley Moacyr John |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/17047-0 - Aerosol and clouds life cycles in Amazonia: biogenic emissions, biomass burning and impacts on ecosystem |
| Grantee: | Paulo Eduardo Artaxo Netto |
| Support Opportunities: | Research Program on Global Climate Change - Thematic Grants |