WOODSTOCK – The recent hot, dry weather creates optimal conditions for the Culex mosquito, which can carry the West Nile virus.

Residents should protect themselves and their families from the mosquito-borne virus at least through the first hard frost. On June 1, the McHenry County Department of Health began setting out mosquito traps that are monitored several times a week.

Mosquitoes are collected, identified and tested for West Nile virus. The health department also will collect a limited number of dead birds each year (robins, crows, blue jays) for testing. Seven birds and five mosquito trap samples have been tested so far this season; all the results have been negative.