The treatment is meant to decrease the mosquito population and minimize the risk of transmission of West Nile Virus.
The first West Nile virus death of 2018 has been reported by the Dallas County Health and Human Services.
The West Nile virus program includes larviciding at catch basins.
The health district said mosquito testing, which began in June is expected to continue through the late fall. Only about 20 percent of those who come in contact with West Nile virus exhibit any symptoms, according to the Centers for Disease Control and Prevention.
Most people infected with the virus have no symptoms at all, or they have flu-like symptoms such as fever, headache, body aches and fatigue. In a small number of cases, especially among those with pre-existing medical risk factors, West Nile can be life threatening.
The Health Unit is urging the public to take steps to prevent mosquito bites.
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They are most active at dawn and dusk and will bite humans as well as other mammals and birds.
Use insect repellent containing DEET when outside.
At this point previous year, DCHHS had reported six West Nile infections.
Last year, 26 people contracted the virus and two died in Dallas County.
For more information on West Nile Virus, please visit the Public Health Agency of Canada website at: http://www.phac-aspc.gc.ca/wn-no/index-eng.php or call the Chatham-Kent Public Health Unit at 519.355.1071.