California has reported 22 fatalities linked to West Nile virus (WNV) infections so far this year with additional deaths being reported from Orange and San Diego Counties. The 22 deaths is the most seen in the state since 2004 when 29 deaths were reported.

The 22 deaths this year have been reported from the following  local health jurisdictions: Glenn (1), Long Beach City (2), Los Angeles (3), Orange (6), Placer (1), Sacramento (2), San Diego (1), Shasta (1), Stanislaus (2), Sutter (2), and Tehama (1).

In addition, California reported another 46 human WNV cases during the past week, bringing the total cases to 654. This is more than double the number of cases reported during the same period in 2013 (319).

The 46 cases were reported from the following counties: Alameda (1- This is the first case reported in Alameda County this year), Kern (1), Los Angeles (25), Orange (16), Placer (2), and San Diego (1).

Nationally, as of October 21, a total of 47 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes. Overall, 1,585 cases of West Nile virus disease in people have been reported to CDC.

West Nile virus
Culex quinquefasciatus