Mortality in hospitalized HIV-infected patients in a referral center in Bahia, Brazil Luca Nascimento; Alex Cleber Improta-Caria; Carlos Brites;

Seroprevalence of hepatitis E virus infection in blood donors from Piauí State, Northeast Brazil João Paulo da Silva-Sampaio; Raniela Borges Sinimbu; Julia Trece Marques; Abilio Francisco de Oliveira Neto; Livia Melo Villar;

Effectiveness of CoronaVac in the prevention of COVID-19, a test-negative case-control study in Brazil Expedito J.A. Luna; José C. Moraes; Manuela A. Roediger; Erique J.F.P. Miranda; Patrícia E. Braga; João I.D. França; Pedro H.M. Pacheco; Marcos Alves de Lima; Lucas Ragiotto; Eliana N.C. Barros;