These county and county equivalent data data are based on information voluntarily reported by state health officials and federal agenciesto CDC. West Nile Virus (WNV) infection was determined by laboratory testing on animals other than wild birds (such as pets, livestock, and wildlife) with symtoms of WNV infection. Note that the map includes all areas of positive (confirmed or
probable) WNV results, but not necessarily all areas with submitted samples or no reports.
| Cumulative Report Maps for the year 2002, California | |||
| Cumulative Human | Cumulative Bird | Cumulative Mosquito | Cumulative Sentinel Flock |
California Department of Health