Mosquito

Nigeria faces new malaria threat as urban mosquito spreads, resistance grows

Scientists warn that Nigeria’s progress against malaria is under serious threat due to the emergence of a new urban mosquito species and rising resistance to drugs and insecticides.

Dr. Adeola Olukosi, of the Nigerian Institute of Medical Research (NIMR), cautioned that without urgent action, years of gains could be reversed.

A key danger is the confirmation of Anopheles stephensi, a mosquito species that thrives in cities, breeds in man-made containers, and shows genetic resistance to multiple insecticides.

First detected in Gombe State, its spread risks turning urban areas into new malaria hotspots.

Furthermore, widespread pyrethroid resistance is undermining the effectiveness of insecticide-treated nets. While drug resistance to key preventative medicines remains low for now, ongoing molecular surveillance is critical to guide treatment policies and protect vulnerable groups.

Nigeria is contributing to global malaria science through networks like MalariaGEN, but Olukosi stressed that the evolving parasite and mosquito demand an equally adaptive national response.

She urged the immediate strengthening of surveillance and control strategies to prevent a major setback in the fight against the disease.

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