Nonlinear dynamics of Streptococcus Pneumoniae: A modified Atangana-Baleanu-Caputo fractional model with vaccination, asymptomatic carriage, and saturated hospital capacity. NS [Internet]. 2026 Feb. 28 [cited 2026 Feb. 28];33(1):183-217. Available from: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/4169