Human Cases
Year-to-date: 7 Counties: 4
7 human cases from 4 counties have tested positive for WNV in 2022.
Dead Birds
Year-to-date: 60 Counties: 13
There were 11 new WNV positive dead birds reported in California last week from the following counties: Butte (1), Los Angeles (4), Sacramento (1), San Bernardino (1), Santa Clara (1), Solano (1), and Yolo (2). This is the first WNV positive dead bird from San Bernardino County this year.
60 dead birds from 13 counties have tested positive for WNV in 2022.
Mosquito Samples
Year-to-date: 965 Counties: 22
There were 263 new WNV positive mosquito samples reported in California last week from the following counties: Butte (3), Fresno (24), Kern (9), Kings (14), Los Angeles (41), Madera (10), Merced (1), Riverside (4), Sacramento (4), San Bernardino (4), San Joaquin (26), Santa Clara (2), Shasta (3), Stanislaus (7), Sutter (2), Tulare (105), Yolo (2), and Yuba (2).
965 mosquito samples from 22 counties have tested positive for WNV in 2022.
A mosquito sample may contain up to 50 individual mosquitoes.
Sentinel Chickens
Year-to-date: 17 Counties: 5
There were 15 new WNV positive sentinel chickens reported in California last week from the following counties: Butte (5), Merced (2), Sutter (2), and Tulare (6). These are the first WNV positive sentinel chickens from Butte, Sutter, and Tulare counties this year.
17 sentinel chickens from 5 counties have tested positive for WNV in 2022.
Horses
Year-to-date: 2 Counties: 1
2 horses from 1 county have tested positive for WNV in 2022.