Appendices

103

Figure 7: Network visualization of the most common terms (represented by circles)

in the titles and abstracts of the included papers. The terms are located based on their

co-occurrences in the titles and abstracts. The size of the label and circle of a term is

determined by the weight of that term.

5.B

DETAILED MODEL DESCRIPTIONS

Aron and May in [44] demonstrated how the burden of malaria is age-determined in

endemic areas and what happens when transmission is reduced. In their age-specific SIRS

model, the rate of loss of immunity γ, depends on the transmission rate h, in the manner

described by Equation 5.1. In the model, time is represented via age of the cohort; typical

for a population that has attained its equilibrium stage of infection. The model comprises

three compartments in humans: Susceptible (Sh ), Infected (Ih ) and Recovered and Im-

mune (Rh), where the effect of mosquito is introduced through the force of infection h. In