A naturally isolated symbiotic bacterium suppresses flavivirus transmission by Aedes mosquitoes

Liming Zhang et al.,  Science,  384. 2024.

Flavivirus diseases are increasing in incidence and prevalence owing to the urban proclivities of its Aedes mosquito vector species. Extirpation of mosquitoes is considered key for the control of several human diseases but often involves toxic chemicals that prompt mosquito resistance. As some biocontrol alternatives look promising in malaria campaigns, Zhang et al. examined the microbiota of Aedes mosquitoes for potential agents to control dengue and Zika virus transmission. The authors isolated a bacterium called Rosenbergiella_YN46 in Aedes albopictus mosquitos. The bacterium was fed to caged mosquitoes to establish stable gut infections, and it was found to prevent the insects from being infected by viruses and blocked viral transmission to mice.


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