News Releases

The Office of the Chief Medical Officer of Health reports that preliminary analysis of adult mosquito traps for the week of July 27 indicates that numbers of Culex tarsalis mosquitoes are increasing in most communities in southern Manitoba, particularly in the southern portion of the Assiniboine Regional Health Authority. 

 

Last week, samples of Culex tarsalis from adult mosquito traps in the towns of Deloraine and Boissevain in the Assiniboine Regional Health Authority tested positive for West Nile virus.  The numbers of Culex tarsalis mosquitoes has risen in these communities and area residents are encouraged to take precautions to reduce their risk of mosquito bites.  No adult mosquito control has been recommended at this time.

 

It is anticipated that more Culex tarsalis mosquitoes infected with West Nile virus will be identified in additional Manitoba communities in the next few weeks. In previous years, the peak risk period for human exposure to West Nile virus has been the last two weeks of July to the first two to three weeks of August.

 

To date, no human cases of West Nile virus have been identified in Manitoba for the 2008 season.

 

Manitobans can reduce the risk of mosquito bites by:

·         reducing the amount of time spent outdoors during peak mosquito hours between dusk and dawn;

·         using appropriate mosquito repellent;

·         wearing light-coloured, loose-fitting clothing; and

·         maintaining door and window screens so they fit tightly and are free of holes.

 

Manitobans can reduce mosquitoes around their home by reducing standing water. To prevent the development of Culex tarsalis mosquitoes, homeowners can:

·         clean eavestroughs and regularly empty bird baths and other items that might collect water,

·         ensure rain barrels are covered with mosquito screening or are tightly sealed around the downspout,

·         clear yards of old tires or other items that collect water, and

·         improve landscaping to prevent standing water around the home.