Absence of neutralizing antibodies against the Omicron SARS-CoV-2 variant in convalescent sera from individuals infected with the ancestral SARS-CoV-2 virus or its Gamma variant. Clinics, [S. l.], v. 77, p. 100068, 2022. DOI: 10.1016/j.clinsp.2022.100068. Disponível em: https://journals.usp.br/clinics/article/view/213419.. Acesso em: 9 jun. 2024.