The impact covid-19 in São Paulo State and City, Brazil: protocols, public policy and predictions. Research, Society and Development, [S. l.], v. 9, n. 9, p. e606997685, 2020. DOI: 10.33448/rsd-v9i9.7685. Disponível em: https://rsdjournal.org/rsd/article/view/7685. Acesso em: 5 dec. 2025.