Fig 1.
The schematic diagram of the HIV/AIDS and COVID-19 co-infection transmission dynamics.
Table 1.
Biological meaning of model parameters.
Table 2.
Biological definitions of model variables.
Fig 2.
Backward bifurcation diagram.
Table 3.
Parameter values used for the co-infection model simulation.
Fig 3.
The feature of the co-infection model (3) solutions at >1.
Fig 4.
Simulation of HIV protection rate k3 versus .
Fig 5.
Simulation of COVID-19 treatment rate κ versus .
Fig 6.
Numerical simulation of COVID-19 protection rate k2 versus .
Fig 7.
Numerical simulation on β2 versus .
Fig 8.
Numerical simulation on β1 versus .
Fig 9.
Numerical simulation on k4 versus .
Fig 10.
Numerical simulations of κ versus Ci.
Fig 11.
Numerical simulation on θ1 versus Hu.
Fig 12.
Numerical simulation on θ2 versus Ma.
Fig 13.
Simulation of HIV infection (Ha) with HIV/AIDS treatment strategy.
Fig 14.
Simulation of HIV infection (Ha) with HIV/AIDS protection strategy.
Fig 15.
Simulation of HIV infection (Ha) with both HIV/AIDS protection and treatment strategies.
Fig 16.
Simulation of COVID-19 infection (Ci) with treatment strategy.
Fig 17.
Simulation of COVID-19 infection (Ci) with treatment strategy.
Fig 18.
Simulation of COVID-19 infection (Ci) with both protection and treatment strategies.
Fig 19.
Simulation of the co-infection with COVID-19 protection and COVID-19 and HIV/AIDS treatments strategies.
Fig 20.
Simulation of the co-infection with HIV protection and COVID-19 and HIV/AIDS treatments strategies.
Fig 21.
Simulation of the co-infection with HIV protection, COVID-19 protection and HIV/AIDS treatment strategies.
Fig 22.
Simulation of the co-infection with HIV protection, COVID-19 protection and COVID-19 treatment strategies.
Fig 23.
Simulation of the co-infection with only HIV and COVID-19 treatments strategies.
Fig 24.
Simulation of the co-infection with only HIV and COVID-19 protections strategies.
Fig 25.
Simulation of the co-infection with all possible strategies.