http://www.newsweek.com/west-nile-virus-death-rate-arizona-mosquito-maricopa-county-1634612

West Nile Virus killed 10 people during September in Arizona, the state's Department of Health Services has reported.

There have been 132 confirmed cases of the virus in the state, which is usually spread by mosquito bites, possibly after the insect feeds on an infected bird and then bites a human. There are another 78 probable cases in the state.