In a recently published article in Vector Borne and Zoonotic Diseases, INHS Medical Entomologists Ephantus J. Muturi and Barry Alto revealed that exposing mosquito larvae to temperature and insecticide stress may actually increase their ability to transmit viruses. At 30°C but not at 20°C, Ae. aegypti larvae exposed to insecticide were more likely to transmit the virus compared to control treatments. These findings suggest that environmental factors experienced by aquatic stages of mosquitoes contribute to the risk of arbovirus transmission.