We develop discrete-event simulation models using a single "timeline" varia
ble to represent the Plasmodium falciparum lifecycle in individual hosts an
d vectors within interacting host and vector populations. Where they are co
mparable, our conclusions regarding the relative importance of vector morta
lity and the durations of host immunity and parasite development are congru
ent with those of classic differential-equation models of malaria epidemiol
ogy. However, our results also imply that in regions with intense perennial
transmission, the influence of mosquito mortality on malaria prevalence in
humans may be rivaled by that of the duration of host infectivity.