Mapping the viral battlefield: SARS-CoV-2 infection dynamics among healthcare workers in Brazil.

Background: Understanding the dynamics of SARS-CoV-2 viral infection and factors associated with in-hospital transmission rates among healthcare workers (HCW) is crucial for their protection. Brazil experienced high mortality rates due to COVID-19, and limited data are available on transmission of SARS-CoV-2 infection among HCW. This cohort study aimed to assess the dynamic of SARS-CoV-2 infections in HCW from two tertiary hospitals in central Brazil, one of them a Reference Hospital for COVID-19.

[Evolution of HIV infection in indigenous peoples in Central Brazil].

Distribution of the AIDS epidemic in Brazil is associated with a wide range of factors that determine different population groups' greater or lesser vulnerability. The study's objective was to analyze clinical and laboratory characteristics of HIV/AIDS in individuals 13 years or older and the evolution to death in the indigenous population assisted by the Special Indigenous Health District of the State of Mato Grosso do Sul, Brazil. A descriptive and retrospective study was performed on the clinical conditions and evolution of the disease from 2001 to 2014, based on three secondary databases.

Epidemiological aspects of HIV infection and AIDS among indigenous populations.

Objective: To describe the epidemiological aspects of HIV infection and AIDS among indigenous peoples of the state of Mato Grosso do Sul, Brazil.

Methods: This is a descriptive epidemiological study on the occurrence and distribution of HIV infection and AIDS in the indigenous population assisted by the Distrito Sanitário Especial Indígena (Indigenous Special Health District) Mato Grosso do Sul between 2001 and 2014, based on three secondary databases. Annual rates of HIV and AIDS detection and prevalence were calculated, considering case distribution according to village, Health Base Pole and sociodemographic variables.

Underreporting of gestational, congenital and acquired syphilis among indigenous peoples in Mato Grosso do Sul State, Brazil, 2011-2014.

Objective: to describe the distribution, incidence, and underreporting of syphilis among indigenous peoples from Mato Grosso do Sul, Brazil.

Methods: descriptive study performed with secondary data of the Information System for Notifiable Diseases (Sinan) and of the Special Indigenous Sanitary District of Mato Grosso do Sul (DSEI-MS), from 2011 to 2014; the data from both sources were compared to identify underreporting.

Results: the highest incidence rates of syphilis in pregnant women were observed in 2014 (41.