A polyvalent RNA vaccine reduces the immune imprinting phenotype in mice and induces neutralizing antibodies against omicron SARS-CoV-2 oleh Vinicius Pinto Costa Rocha, Bruna Aparecida Souza Machado, Breno Cardim Barreto, Helenita Costa Quadros, Antonio Márcio Santana Fernandes, Eduarda dos Santos Lima, Mariana Evangelista Bandeira, Cássio Santana Meira, Larissa Moraes dos Santos Fonseca, Jesse Erasmus, Amit Khandhar, Peter Berglund, Steve Reed, Roberto José da Silva Badaró, Milena Botelho Pereira Soares