The East Side Mosquito Abatement District and Stanislaus County Public Health have collectively introduced the primary detection of invasive (non-native) Aedes aegypti mosquitoes within the county. Aedes aegypti mosquitoes have been detected beforehand elsewhere in California, however by no means earlier than in Stanislaus County. Aedes aegypti is able to transmitting viruses resembling chikungunya, dengue, yellow fever, and Zika that aren’t transmissible by the native Culex mosquitoes.
Aedes aegypti mosquitoes pose a risk in that returning vacationers could contract these viruses elsewhere, and Aedes aegypti in infested areas could choose them up and transmit to others. While the Aedes aegypti mosquito has the potential to transmit lethal viruses, none of those viruses are presently recognized to be transmitted regionally in California.