MURPHY, Gregory P. et al. COVID-19 seroprevalence in primary and secondary healthcare workers (HCWs). International Journal of Infection Control, [S. l.], v. 17, n. 1, 2021. DOI: 10.3396/ijic.v17.21784. Disponível em: https://ijic.info/article/view/21784. Acesso em: 9 apr. 2025.