COVID-19 post-vaccination in healthcare workers and vaccine effectiveness, Brazil, 2021. Clinics, [S. l.], v. 77, p. 100109, 2022. DOI: 10.1016/j.clinsp.2022.100109. Disponível em: https://www.journals.usp.br/clinics/article/view/213561.. Acesso em: 1 jun. 2024.