The spread of Anopheles stephensi (An. Stephensi) mosquitoes poses a significant threat to malaria elimination in Africa, according to a 2019 vector alert from the World Health Organization (WHO). This malaria vector, formerly only seen in South Asia and parts of the Arabian Peninsula, was detected for the first time in Africa in 2012, in the city of Djibouti. Over the last decade, An.stephensi has been expanding, with cases reported in five different countries on the African continent. To respond to this challenge, the WHO recently announced a new initiative aimed at halting the spread of this invasive mosquito species in the region.
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From deadly droughts and destroyed crops to shrinking water sources, communities across sub-Saharan Africa are struggling to withstand the onslaught of global record-breaking temperatures. But the dangers do not end there. Rising heat poses another threat - one that is far less known and studied but could spark disease epidemics across the continent, scientists say.
One of the most common insecticides used in the battle against the Aedes aegypti mosquito has no measurable impact when applied in communities where the mosquito has built up resistance to it, a study led by EmoryUniversity finds.