West Nile virus has been discovered in Delaware for the first time this year in a blood sample taken from sentinel chickens which are monitored for mosquito-borne diseases.
The results were reported to DNREC on Aug. 2 by the Delaware Division of Public Health Laboratory.
There are no approved WNV or eastern equine encephalitis (EEE) vaccines for humans. The majority of humans infected with WNV typically have symptoms similar to a mild flu.
In 2003, the worst West Nile outbreak in Delaware occurred with 17 confirmed human cases, two fatalities and 63 horse cases.
No cases of West Nile virus WNV have been found in humans or horses so far this year in Delaware.