Characteristics of SARS-CoV-2 aerosol dispersion in indoor air: scoping review

Anyele Albuquerque Lima; Izabelly Carollynny Maciel Nunes; José Leandro da Silva Duarte; Lucas Meili; Patricia de Carvalho  Nagliate; Alda Graciele Claudio dos Santos  Almeida

doi:10.33448/rsd-v10i4.14300

Autores

Anyele Albuquerque Lima Universidade Federal de Alagoas https://orcid.org/0000-0001-7254-9412
Izabelly Carollynny Maciel Nunes Universidade Federal de Alagoas https://orcid.org/0000-0002-5032-2759
José Leandro da Silva Duarte Universidade Federal de Alagoas https://orcid.org/0000-0001-5641-0648
Lucas Meili Universidade Federal de Alagoas https://orcid.org/0000-0002-0307-8204
Patricia de Carvalho Nagliate Universidade Federal de Alagoas https://orcid.org/0000-0001-6715-0028
Alda Graciele Claudio dos Santos Almeida Universidade Federal de Alagoas https://orcid.org/0000-0003-0406-8849

DOI:

https://doi.org/10.33448/rsd-v10i4.14300

Palavras-chave:

Coronavírus; Dispersão; SARS-CoV-2; Aerossol.

Resumo

Introdução: SARS-CoV-2 é o agente infeccioso responsável pela COVID-19, sua transmissão ocorre por meio da liberação de gotículas. Entretanto, a disseminação via aerossóis é descrita na literatura como uma das formas possíveis de transmissão do SARS-CoV-2. Objetivo: Identificar as principais características de dispersão dos aerossóis com SARS-CoV-2 no ar. Métodos: Scoping Review realizada nas bases de dados: National Library of Medicines – MEDLINE/via Pubmed, Scopus, Web of Science, Biblioteca Virtual de Saúde (BVS) e Cochrane Library, a busca na literatura cinzenta foi realizada no Google Scholar, OpenGrey e Grey Literature Report, durante Março a Maio de 2020. Utilizou-se os descritores: “coronavirus” and “aerosol”. A seleção e triagem dos dados foram feitos seguindo as orientações do protocolo PRISMA flow diagram e a ferramenta de gerenciamento de referências EndNote. Resultados: Selecionaram-se 10 artigos, os quais continham características que poderiam influenciar na dispersão de aerossóis contendo o SARS-CoV-2, dentre elas as que se destacaram foram: origem do aerossol; carga viral identificada no ar (2.86 cópias/litro de ar); tamanho da partícula de aerossol com carga viral (0.25 μm); dispersão (10 m); tempo de permanência no ar (3 h); influência da temperatura e da umidade relativa do ar. Conclusão: As partículas de aerossóis com SARS-CoV-2 podem possuir uma carga viral infecciosa, apresentando um tamanho mínimo de até 0,25 μm, sendo capaz de alcançar até 10 m de distância e sobreviver no ar por algumas horas. As variáveis temperatura e umidade relativa do ar não apresentaram evidências consistentes que comprovem influenciar na dispersão dos aerossóis com SARS-CoV-2.

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