Data from: Malaria transmission potential could be reduced with current and future climate change

Several studies suggest the potential for climate change to increase
malaria incidence in cooler, marginal transmission environments. However,
the effect of increasing temperature in warmer regions where conditions
currently support endemic transmission has received less attention. We
investigate how increases in temperature from optimal conditions (27 °C to
30 °C and 33 °C) interact with realistic diurnal temperature ranges
(DTR: ± 0 °C, 3 °C, and 4.5 °C) to affect the ability of key vector
species from Africa and Asia (Anopheles gambiae and An. stephensi) to
transmit the human malaria parasite, Plasmodium falciparum. The effects of
increasing temperature and DTR on parasite prevalence, parasite intensity,
and mosquito mortality decreased overall vectorial capacity for both
mosquito species. Increases of 3 °C from 27 °C reduced vectorial capacity
by 51–89% depending on species and DTR, with increases in DTR alone
potentially halving transmission. At 33 °C, transmission potential was
further reduced for An. stephensi and blocked completely in An. gambiae.
These results suggest that small shifts in temperature could play a
substantial role in malaria transmission dynamics, yet few empirical or
modeling studies consider such effects. They further suggest that rather
than increase risk, current and future warming could reduce transmission
potential in existing high transmission settings.