optimal (control of) intervention strategies for malaria epidemic in karonga district, malawi
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2014
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Abstract
Malaria is a public health problem for more than 2 billion people globally. About 219
million cases of malaria occur worldwide and 660,000 people die, mostly (91%) in the African
Region despite decades of efforts to control the disease. Although the disease is preventable, it
is life-threatening and parasitically transmitted by the bite of the female Anopheles mosquito.
A deterministic mathematical model with intervention strategies is developed in order to
investigate the effectiveness and optimal control strategies of indoor residual spraying (IRS),
insecticide treated nets (ITNs) and treatment on the transmission dynamics of malaria in
Karonga District, Malawi. The effective reproduction number is analytically computed,
and the existence and stability conditions of the equilibria are explored. The model does
not exhibit backward bifurcation. Pontryagin’s Maximum Principle which uses both the
Lagrangian and Hamiltonian principles with respect to a time dependent constant is used to
derive the necessary conditions for the optimal control of the disease. Numerical simulations
indicate that the prevention strategies lead to the reduction of both the mosquito population
and infected human individuals. Effective treatment consolidates the prevention strategies.
Thus, malaria can be eradicated in Karonga District by concurrently applying vector control via ITNs and IRS complemented with timely treatment of infected
people.
| Reference Key |
mwamtobe2014abstractoptimal
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|---|---|
| Authors | ;Peter M. Mwamtobe;Shirley Abelman;J. Michel Tchuenche;Ansley Kasambara |
| Journal | science and technology of advanced materials |
| Year | 2014 |
| DOI |
10.1155/2014/594256
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| URL | |
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