Wet Dry Malaria

Wet Dry Malaria

Reduced malaria in dry season

Malaria in wet and dry seasons. Top: Histogram of the frequency of malaria cases over the course of one year showing the drop in the number of cases in humans during the dry season. Middle: View of Bamako in the wet and dry season, during the dry season mosquito breeding sites disappear and transmission of the malaria parasite is interrupted for several months. Bottom: Plasmodium falciparum, the malaria parasite, stained with Giemsa on thick blood smears from a malaria case in the wet season (left) and an asymptomatic infection at the end of the dry season (right) showing reduced parasite load in the asymptomatic sample.

IMAGE: Portugal Laboratory