United States Department of Agriculture | Animal and Plant Health Inspection Service | Veterinary Services
National Animal Health Surveillance System (NAHSS)
Equine Encephalitides Reporting
Equine Monitoring & Surveillance  |   Contact Us

West Nile Virus, Eastern Equine Encephalitis, and Western Equine Encephalitis

County-Level Report

  • Return to State Summary Report
  • Earliest Detection Date is the first date the virus was reported for that county in 2009
  • Last Update:   Nov 17, 2009

Cumulative Number of Equine Cases, 2009
State=   CA
County
West Nile Virus Cases
Earliest WNV Detection:
Eastern Equine Encephalitis Cases:
Earliest EEE Detection:
Western Equine Encephalitis Cases:
Earliest WEE Detection:
CONTRA COSTA COUNTY
1
Aug 10, 2009
0
0
FRESNO COUNTY
1
Sep 20, 2009
0
0
LOS ANGELES COUNTY
1
Aug 5, 2009
0
0
MERCED COUNTY
3
Sep 15, 2009
0
0
SACRAMENTO COUNTY
2
Sep 8, 2009
0
0
SAN JOAQUIN COUNTY
3
Jul 10, 2009
0
0
SHASTA COUNTY
1
Sep 5, 2009
0
0
SOLANO COUNTY
1
Aug 30, 2009
0
0
STANISLAUS COUNTY
2
Jul 30, 2009
0
0
TEHAMA COUNTY
1
Sep 9, 2009
0
0
TULARE COUNTY
1
Sep 24, 2009
0
0

Return to State Summary Report

This information was obtained from State Veterinarians and the ArboNET reporting system. If this information is not accurate, please provide updated information to the National Surveillance Unit at national.surveillance.unit@aphis.usda.gov

More Information:
Equine Monitoring & Surveillance  |   Contact Us
National Animal Health Surveillance System
| USDA | FOIA | Accessibility Statement | Privacy Policy | Non-Discrimination Statement | Information Quality | FirstGov | White House