A CaputoFabrizio Fractional-Order SEIHRVN Model for Human Metapneumovirus (hMPV): Vaccination, Stability and Sensitivity Analysis
DOI:
https://doi.org/10.48165/jmmfc.2025.2204Keywords:
Human metapneumovirus (hMPV), Fractional order epidemic model, Caputo fabrizio derivative, Immune evasion, Stability, Basic Reproduction Number Sensitivity analysisAbstract
Human metapneumovirus (hMPV) is a major cause of acute respiratory infections across all age groups with no licensed vaccine currently available. To capture the disease dynamics and assess potential control strategies we propose a fractional-order CF–SEIHRVN model incorporating seasonal transmission, hospitalization, waning immunity and vaccination. The model stratifies the population into Susceptible (S), Exposed (E), Infectious (I), Hospitalized/Severe (H), Recovered (R), Vaccinated (V) and total population size (N). Caputo–Fabrizio fractional derivatives are employed to account for memory effects in transmission and recovery processes. Key epidemiological parameters are drawn from demographic and clinical data for China and India. Seasonal forcing in β(t) reflects climatic in fluences on transmission. The framework enables computation of the basic reproduction number R0, stability analysis of equilibria, Hopf bifurcation investigation, and optimal control formulation. Sen sitivity analysis highlights key parameters affecting R0. Numerical simulations illustrate intervention strategies providing valuable insights into hMPV control under different demographic conditions.
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