Fig. 2

Correlation between mean temperature (a) diurnal temperature ranges to malaria (b) and general under-five morbidity in Zomba district, Malawi. a There is a general increase in malaria and morbidity cases as mean temperature increases. This increase reaches a peak at 24 °C where the number of malaria and morbidity cases drastically drop. A Gaussian fit which is indicated by a solid trend line confirms this critical mean temperature of 24 °C. b Suggests that rapid and large changes in diurnal temperatures lead to lower reported malaria cases, a finding which leads to the suspicion that vector breeding is curtailed by these temperature variations