MARKHAM, Ont. -- Officials in York Region say two mosquito traps have tested positive for West Nile virus in Markham, Ont.

York Region's medical officer of health says residents can take simple steps to reduce the risk of West Nile virus and exposure to mosquitoes.

Dr. Karim Kurji says people should cover up when heading outside, especially during dusk and dawn and eliminate standing water around their property to reduce mosquito breeding.

As part of its West Nile virus control plan, York Region places larvicides in catch basins to interrupt mosquito breeding.

Other stagnant public water sources, including roadside ditches, also are treated.