Invasive Malaria Mosquito Crossing Africa Escalates Urban Threat

An invasive, urban-adapted malaria mosquito, Anopheles stephensi, that is resistant to current insecticides is spreading across Africa far faster than feared, threatening malaria in megacities. Genomic analysis traces its rapid expansion from Djibouti into Ethiopia and Kenya, then Sudan and West Africa, with urban transmission possible year‑round. Public-health responses are hampered by shrinking surveillance funding and limited resources, making containment unlikely and potentially worsening urban malaria burdens in cities like Lagos and Kinshasa.