You can come out from under the bed now; the West Nile "crisis" seems to have passed:
As humans and animals develop immunity to the West Nile virus, the number of confirmed human cases of the mosquito-borne disease has seen a dramatic decline in California, a trend that is expected to continue, health experts said.
[. . .]
What's occurring here now is the same thing that's occurring in other areas: You have exposed a virus to a naive population and have had a large die-off," said Dr. Jonathan Fielding, the county's health officer. "Those who survived are developing antibodies to fight off the virus. It's Darwin 2006."