CHEYENNE, Wyo. (AP) — The Wyoming Department of Health reminds residents that West Nile virus spread by mosquitoes remains a potential threat with the coming of summer.

Emily Thorp of the Health Department says because mosquitoes spread the virus, preventing mosquito breeding and avoiding bites are important preventative measures.

Last year, there were seven human West Nile cases in Wyoming.

Since the ailment first appeared in Wyoming in 2002, the annual numbers of reported human cases have ranged from two with no deaths to 393 and nine deaths.