Around 18 months after the gene-hacked strain was released into the wild, the native mosquito population bounced up to almost pre-release levels.
"Tracking and monitoring the types of mosquitoes that exist in Nebraska communities is critical, which in turn helps us identify potential public health implications and implement prevention measures to reduce risk," a state epidemiologist said.
Scientists have put together the most "comprehensive catalog" of the Aedes aegypti mosquito's DNA.
An outbreak of yellow fever in Brazil has officials in the United States on watch.
Killing the animals could actually harm efforts to contain the disease among people.
Pitting mosquitoes against mosquitoes just might work.
Chinese travelers in Angola have carried the virus home, raising fears of an outbreak in Asia.