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View all search resultsInvasive malaria mosquito spreading in Africa, researchers warn
Tens of millions of city dwellers under threat.
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N
ew evidence has emerged that an invasive species of malaria-carrying mosquito from Asia is spreading in Africa, where it could pose a "unique" threat to tens of millions of city dwellers, researchers warned on Tuesday.
In Africa, home to more than 95 percent of the world's 627,000 malaria deaths in 2020, the parasite is mostly spread in rural areas preferred by the dominant Anopheles gambiae group of mosquitoes.
However, the Anopheles stephensi mosquito, which has long been a main malaria spreader in Indian and Iranian cities, can breed in urban water supplies, meaning it can thrive during the dry season. It is also resistant to commonly used insecticides.
Modeling research in 2020 found that if Anopheles stephensi spread widely in Africa it would put more than 126 million people in 44 cities at risk of malaria.
Djibouti became the first African nation to detect Anopheles stephensi in 2012. It had been close to eradicating malaria with just 27 reported cases that year.
However the number has skyrocketed since Anopheles stephensi's arrival, hitting 73,000 cases in 2020, according to the World Health Organization.
On Tuesday, researchers revealed the first evidence that a malaria outbreak in neighboring Ethiopia earlier this year was caused by Anopheles stephensi.
