First bird of year tests positive for West Nile in El Dorado County.

El Dorado County health officials have received confirmation that a bird found in the South Lake Tahoe area of El Dorado County has tested positive for West Nile virus, the first for 2018. The bird, a Stellar’s Jay, was collected May 7. So far this year, West Nile virus activity in dead birds has been reported in three California counties: El Dorado, San Mateo and Santa Clara.