Nonlinear dynamics of Streptococcus Pneumoniae: A modified Atangana-Baleanu-Caputo fractional model with vaccination, asymptomatic carriage, and saturated hospital capacity. Nonlinear Studies, [S. l.], v. 33, n. 1, p. 183–217, 2026. Disponível em: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/4169. Acesso em: 28 feb. 2026.