Background SARS-CoV-2 variants have distinct features of transmissibility, infectivity, and
aggressiveness that may cause different clinical manifestations. A better understanding of …

The spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), causing the
COVID-19 outbreak, posed a primary concern of public health worldwide. The most common …

Mucosal vaccination appears to be suitable to protect against SARS-CoV-2 infection. In this
study, we tested an intranasal mucosal vaccine candidate for COVID-19 that consisted of a …

Since 2021, the emergence of variants of concern (VOC) has led Brazil to experience record
numbers of in COVID-19 cases and deaths. The expanded spread of the SARS-CoV-2 …

Objective To investigate the association between occupation and severe acute respiratory
syndrome coronavirus 2 (SARS‑CoV‑2) infections within a Brazilian municipality. Methods In …

We examined the asymptomatic rates of SARS-CoV-2 infection during the Delta and
Omicron waves in the city of São Paulo. Nasopharyngeal swabs were collected at strategic …

Since 2021, the emergence of variants of concern (VOC) has led Brazil to experience record
numbers of in COVID-19 cases and deaths. The expanded spread of the SARS-CoV-2 …

The spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), causing the
COVID-19 outbreak, posed a primary concern of public health worldwide. The most common …

Objetivo: Analisar os fatores preditores de sobrevida e de óbito em pacientes hospitalizados
com COVID-19. Método: Trata-se de um estudo transversal, recorte do banco de dados da …

No final de 2019, um novo coronavirus surgiu na cidade Wuhan, na China, desencadeando
um surto de pneumonia viral incomum, caracterizada por uma alta taxa de …