Mosquitoes In California 2025. 2 billion genetically modified mosquitoes cleared for release in california and florida the epa has approved oxitec's modified skeeters for release into the wild, as part of a. Npr's ayesha rascoe speaks with scientific director solomon birhanie about his efforts to fight mosquitoes in southern california by releasing sterile male mosquitoes into the.

California has had native mosquitoes going back to the gold rush days, when malaria tore through populations and had to be eradicated by aggressive mosquito abatement. Winter storms, summer heat and tropical storm hilary have bred a surge of mosquitoes in some parts of california.