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;

Seroprevalence of anti-SARS-CoV-2 in patients with hepatitis B and C: a pre-vaccination study Lucas Lima da Silva; Lia Laura Lewis-Ximenez; Mônica de Avelar Figueiredo Mafra Magalhães; Vanessa Salete de Paula; Livia Melo Villar;

SARS-CoV-2 and dialysis: humoral response, clinical and laboratory impacts before vaccination Alanna Calheiros Santos; Vanessa Duarte da Costa; Lucas Lima da Silva; Juliana Custódio Miguel; Rodrigo Jardim; Alberto Martín Rivera Dávila; Vanessa Salete de Paula; Juliana Gil Melgaço; Barbara Vieira do Lago; Livia Melo Villar;