Transitivity of COVID-19, based on parameters R_0 and R_((t)) in Pombos/PE municipality, Brazil. Research, Society and Development, [S. l.], v. 9, n. 10, p. e1139108441, 2020. DOI: 10.33448/rsd-v9i10.8441. Disponível em: https://www.rsdjournal.org/rsd/article/view/8441. Acesso em: 6 dec. 2025.