The fourth COVID-19 vaccine dose increased the neutralizing antibody response against the SARS-CoV-2 Omicron (B.1.1.529) variant in a diverse Brazilian population oleh Jéssica Pires Farias, Robert Andreata-Santos, Ruth Dalety da Silva Brito, Milena Silva Souza, Mayanna Moreira Costa Fogaça, Josilene Ramos Pinheiro, Edgar Ferreira da Cruz, Willian Liang, Rafael da Conceição Simões, Wilson Barros Luiz, Alexander Birbrair, Paloma Oliveira Vidal, Juliana Terzi Maricato, Carla Torres Braconi, Luís Carlos de Souza Ferreira, Luiz Mário Ramos Janini, Jaime Henrique Amorim