The Kent County Health Department (KCHD) detected a dangerous mosquito-borne illness (Jamestown Canyon virus) in part of Kent County following a survey of the mosquito population.

The discovery, which is not a human case, was made during ongoing surveillance and testing conducted by the KCHD near Grand Rapids and Walker. It’s not a human case of the virus, but it can still spread to humans. This warning reminds people to stay alert around mosquitoes, especially if they bite them.

“Fortunately, the measures that people can take to protect themselves from other mosquito borne illnesses will work against the Jamestown Canyon virus,” said Brendan Earl, Supervising Sanitarian at KCHD. “With the increase in mosquito activity this time of year, it is good to practice simple and proven steps to prevent mosquito bites.”

Mosquitos lay their eggs in standing water, making it a breeding ground. Flooding and heavy rain in West Michigan early Monday will only create more opportunities for mosquitos to grow.

“Their larval lifestyle requires them to be in water,” Earl said. “If you dump them out, we always call it tip and toss, you’ll get rid of entire generations of mosquitos.”

Jamestown Canyon virus is spread to people by infected mosquitoes from April to September. Vaccines cannot prevent the virus, and no medications can treat it. The best way to protect yourself from the virus is to avoid mosquito bites.

While the symptoms of the Jamestown Canyon virus include headache, fever, and fatigue, severe cases of meningitis or encephalitis are extremely rare. This should provide significant reassurance to you and your family.

Prevent mosquito-borne illnesses by taking the following precautions:

• Spray insect repellent with 10–35% DEET.
• Wear long sleeves and pants with light colors.
• Stay indoors during dusk to reduce your risk of being bitten
• Remove or refresh water in bird baths, children’s wading pools, water bowls for your pets, and empty other small containers that can collect water in your yard

For more information, read the Kent County Health Department’s press release. This will give you a more comprehensive understanding of the situation and how to protect yourself.