The COVID-19 pandemic in Brazil has been marked by high infection and death rates. The
immune response generated by current vaccination might be influenced by previous natural …

After more than a year since the novel coronavirus (SARS-CoV-2) disease 2019 or COVID-
19 has reached the status of a global pandemic, the number of COVID-19 cases continues …

SUMMARY OBJECTIVE: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
disease (COVID-19) is still a major problem worldwide. Antibody response to SARS-CoV-2 …

Background: Serological tests provide an important tool to diagnose previous exposure to
the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Herein we describe the …

Introduction: reverse transcription-polymerase chain reaction (RT-PCR) is an accurate
technique in coronavirus detection. It was selected as a confirmatory test for SARS-CoV-2 …

Background: Brazil has one of the highest numbers of COVID-19 cases and deaths. Rio
Grande do Sul (RS) in southern Brazil is one of the leading states in terms of case numbers …

Descreveremos a vigilância e monitoramento da infecção por SARSCOV2 em estudantes
concluintes dos cursos de medicina em estágio presencial em hospital universitário público …

Background COVID-19 has become a major public health problem after the outbreak
caused by SARS-CoV-2 virus. Great efforts to contain COVID-19 transmission have been …

Introduction: People living with Human Immunodeficiency Virus (HIV) are under risk for co-
infection with SARS-CoV-2. This population may be more prone to complications from …

Background: São Paulo city has been one of the regions most affected by the COVID-19
pandemic in Brazil. Frequent asymptomatic and oligosymptomatic infections and poor …