Logistics Workers Are a Key Factor for SARS-CoV-2 Spread in Brazilian Small Towns: Case-Control Study [open pdf - 528KB]
From the Introduction: "SARS-CoV-2 [severe acute respiratory syndrome coronavirus 2] emerged in Wuhan, China in December 2019. The virus spread worldwide, resulting in the COVID-19 [coronavirus disease 2019] pandemic [...]. In Brazil, the first case was confirmed on February 25, 2020, and the country gradually became one of the most affected, sustaining an average of more than 40,000 new cases per day and 1000 deaths per day during the second quarter of 2020 [...]. As evidence mounted suggesting that a high proportion of individuals infected with SARS-CoV-2 are asymptomatic or oligosymptomatic [...], seroprevalence studies emerged as an important tool not only to see the real extension of the pandemic but also to help understand the dynamics and factors that contribute to viral spread. A national population-based study with samples from 133 large sentinel cities in Brazil conducted from May to June 2020 showed a marked variability in seroprevalence across Brazilian regions, ranging from below 1% in most cities in the south to up to 25% in the Amazon (north) region [...]. Seroprevalence was similar between different ages and sex but was higher among those with low socioeconomic status and among those living in households with greater numbers of people. The study estimated that there were 7 undetected SARS-CoV-2 cases for every detected case in Brazil."
scroll for moreBernardes-Souza, Breno
Costa Júnior, Saulo Ricardo
Santos, Carolina Ali
Neto, Raimundo Marques Do Nascimento
Bottega, Fernando De Carvalho
Godoy, Daiana Carolina
Freitas, Bruno Lourençoni
Silva, Daniela Leite Garcia
Brinker, Titus Josef
Nascimento, Raiza Aranha
Reis, Alexandre Barbosa
2021 Breno Bernardes-Souza, Saulo Ricardo Costa Júnior, Carolina Ali Santos, Raimundo Marques Do Nascimento Neto, Fernando De Carvalho Bottega, Daiana Carolina Godoy, Bruno Lourençoni Freitas, Daniela Leite Garcia Silva, Titus Josef Brinker, Raiza Aranha Nascimento, Unaí Tupinambás, Alexandre Barbosa Reis, Wendel Coura-Vital. Posted here with permission. Document is under a Creative Commons license and requires proper attribution and noncommercial use to be shared: [https://creativecommons.org/licenses/by/4.0/].
JMIR Publications: https://jmirpublications.com/
JMIR Public Health Surveillance (Septmeber 1, 2021), v.7 issue 9