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Two People Test Positive For Mosquito-Borne Viruses in Michigan

Mosquito-borne viruses pose a significant health risk in Michigan, as evidenced by recent cases of Jamestown Canyon virus (JCV) reported in Macomb and Oakland counties. These cases mark the first identified instances of the virus in the state for this year, potentially making them the first cases nationally. With the mosquito season in full swing, it is crucial to stay informed about the risks and take necessary precautions to protect yourself and your family.

Jamestown Canyon virus, along with other mosquito-borne viruses like West Nile virus and Eastern Equine Encephalitis virus, is transmitted to humans through the bite of an infected mosquito. Although most people who contract JCV show no symptoms, some may experience illness within two to fourteen days after being bitten. Common symptoms include fever, muscle weakness, confusion, and severe headaches. In rare cases, JCV can lead to more severe complications such as meningitis and encephalitis.

The two confirmed cases of JCV in Michigan were detected in residents from Macomb and Oakland counties. These individuals are among the first to be diagnosed with an arboviral illness in the state this year. Health officials are closely monitoring the situation to prevent further spread of the virus and provide appropriate medical care to those affected.

The risk of contracting a mosquito-borne illness, including JCV, increases during the mosquito season, which spans from summer until the first frost. Factors that contribute to this risk include the prevalence of infected mosquitoes, the presence of suitable breeding grounds, and human exposure to mosquito habitats. Understanding these risk factors can help individuals take proactive measures to minimize their chances of mosquito bites and subsequent infection.

Preventing mosquito bites is the most effective way to reduce the risk of mosquito-borne illnesses. Here are some practical preventive measures you can take:

  1. Eliminate Mosquito Breeding Sites: Mosquitoes breed in stagnant water, so regularly remove standing water from your property. Empty flower pots, birdbaths, and other containers that collect water.

  2. Use Mosquito Repellent: Apply an EPA-approved mosquito repellent containing ingredients like DEET, picaridin, or oil of lemon eucalyptus to exposed skin and clothing. Follow the instructions for safe and effective use.

  3. Wear Protective Clothing: When spending time outdoors, wear long sleeves, long pants, and socks to minimize exposed skin. Consider treating clothing with permethrin, an insect repellent that can withstand multiple washes.

  4. Avoid Peak Mosquito Activity: Mosquitoes are most active during dawn and dusk. If possible, limit outdoor activities during these times or use additional protective measures like mosquito netting.

  5. Maintain Window and Door Screens: Ensure that windows and doors have intact screens without any holes or tears, preventing mosquitoes from entering your living spaces.

  6. Support Community Mosquito Control Efforts: Stay informed about local mosquito control initiatives and support efforts to reduce mosquito populations in your community.

For more information on mosquito-borne illnesses and tips on protection, refer to the resources provided by the St. Joseph Department of Health here. These resources offer comprehensive guidance on reducing mosquito exposure and safeguarding your health.

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