6.2  Non-climatic factors

Factors that affect malaria transmission, but which are not related to the climate, are called non-climatic factors. The type of vector, the type of parasite, environmental development and urbanisation, population movement and migration, the level of immunity to malaria in the human hosts, insecticide resistance in mosquitoes, and drug resistance in parasites, all have a role in affecting the severity and incidence of malaria. We will look at each of these in turn.