OLIVEIRA, R. P. de. Positivity rate for COVID-19 of RT-PCR tests of the first quarter of 2021 of the state of Amazonas. Seven Editora, [S. l.], 2023. Disponível em: https://sevenpublicacoes.com.br/editora/article/view/1303. Acesso em: 8 apr. 2025.