The World Health Organization (WHO) has expressed worry about a recently identified species of mosquito, colloquially known as “Steve” ( but scientifically termed Anopheles stephensi), which is currently threatening the fight against mosquitoes in Africa
The “Steve” mosquito is causing a surge in malaria infections across the continent, which has prompted the growing public health concerns.
The “Steve” mosquito which originated from South Asia was first discovered in Djibouti in 2012.
Since its initial detection, the country has experienced a staggering increase in malaria rates.
The mosquito has since spread to seven African countries, including Ethiopia, Sudan, Somalia, Kenya, Nigeria, and Ghana.
The Steve mosquito is different from other mosquitoes which typically breed in rivers and swamps, as it is an urban breeder, thriving in dry environments.
Its ability to survive with minimal moisture, utilising water trapped in containers, tyres, and gutters, makes it particularly challenging to control.
This new species also exhibits unique behaviours, such as biting outdoors during daylight hours and displaying immunity to commonly used pesticides.
WHO’s lead for tropical diseases in Africa, Dr. Dorothy Achu, emphasised the that “Steve” is challenging current strategies primarily focused on indoor interventions.
She says the difficulty in detecting and eliminating this resilient mosquito from harsh climates, has further complicated efforts to curb its impact on public health.
As the “Steve” mosquito continues to spread, health officials are grappling with the urgent need for innovative strategies to address this emerging threat to malaria control in Africa
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