Mosquito Spraying in San Jose after West Nile Found in Crow

The West Nile virus was found in a dead crow in San Jose, which means the mosquito fogger is on its way, the San Jose Mercury News reported.

The fogger -- a pickup truck that sprays a concoction derived from chrysanthemum flowers that's designed to kill mosquitoes, which can transmit the virus to humans -- is scheduled to spray the Miner Park area at 11 p.m. Wednesday night, the newspaper reported.

About 1 percent of mosquitoes in a 3.75-mile area were found to to have the virus. A crow found dead in the area tested positive for West Nile, which has killed 130 people in California since 2003.

One man in Sacramento has died this year from West Nile, the newspaper reported.

The fog is "millions of these little micro droplets" of pyrethrin, which is derived from the flowers, and another chemical that slows the insects' ability to quickly metabolize the poison, which is supposed to evaporate by sunrise, the newspaper reported.

Foggging is a one-to-three times per year event, the newspaper reported.