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COVID-19 Brief Communication Prevalence of SARS-CoV-2 infection among urban cleaning and solid waste management workers during transmission of the Omicron variant in Brazil
Paulo Ricardo Martins-Filho1orcid , Joyce Thayane da Conceição dos Santos1orcid , Márcia Santos Rezende1orcid , Fernanda Oliveira de Carvalho1orcid , Érica Santos dos Reis1orcid , Waneska de Souza Barboza2orcid , Taise Ferreira Cavalcante1orcid , Cliomar Alves dos Santos3orcid , Lucindo José Quintans-Júnior1orcid , Renata Grespan1orcid , Cristiane Bani Corrêa1orcid , Tatiana Rodrigues de Moura1orcid , Dulce Marta Schimieguel1orcid , Jullyana de Souza Siqueira Quintans1orcid , Adriano Antunes de Souza Araújo1orcid
Epidemiol Health 2023;45e2023025-0
DOI: https://doi.org/10.4178/epih.e2023025
Published online: February 16, 2023
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1Federal University of Sergipe, Aracaju, Brazil
2Aracaju City Hall, Municipal Health Department, Aracaju, Brazil
3Government of Sergipe State, Health Foundation Parreiras Horta, Central Laboratory of Public Health (LACEN/SE), Aracaju, Brazil
Corresponding author:  Paulo Ricardo Martins-Filho,
Email: prmartinsfh@gmail.com
Received: 6 July 2022   • Accepted: 18 January 2023

This study estimated the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in urban cleaning and solid waste management workers during the transmission of the Omicron variant in one of the poorest regions of Brazil (the state of Sergipe). Nasopharyngeal swabs were collected from 494 workers, and the presence of SARS-CoV-2 RNA was tested by quantitative reverse-transcriptase polymerase chain reaction. Data on socio-demographic characteristics, comorbidities, vaccination status, mask use, and use of public transport to commute to the workplace were collected. The prevalence with a 95% confidence interval (CI) was calculated from the proportion of SARS-CoV-2 positive cases among the total number of individuals tested. The prevalence ratio (PR) with a 95% CI was the measure of association used to evaluate the relationship between SARS-CoV-2 infection and the exposure variables. The prevalence of SARS-CoV-2 infection was 22.5% (95% CI, 19.0 to 26.4). Individuals under the age of 40 had a higher prevalence of infection (PR, 1.53; 95% CI, 1.03 to 2.30) as well as those who did not believe in the protective effect of vaccines (PR, 1.78; 95% CI, 1.05 to 2.89). Our results indicate the need for better guidance on preventive measures against coronavirus disease 2019 among urban cleaning and solid waste management workers.


Epidemiol Health : Epidemiology and Health