About Jamestown Canyon Virus

For Everyone

Key points

  • Jamestown Canyon virus spreads to people through the bites of infected mosquitoes.
  • Symptoms can include fever, headache, and fatigue, but disease can also be more severe.
  • No vaccines or medicines are available to prevent or treat Jamestown Canyon virus disease (Jamestown Canyon).
  • Reduce your risk by preventing mosquito bites.
Young man at a playground applying insect repellant to his arm.

Overview

Jamestown Canyon is a disease caused by a virus spread by infected mosquitoes. Jamestown Canyon virus is found throughout much of the United States, but most cases are reported from the upper Midwest. Cases occur from late spring through mid-fall.

Symptoms

Fever, headache, and fatigue are common symptoms of Jamestown Canyon. Jamestown Canyon virus can cause severe disease, including encephalitis (inflammation of the brain).

Keep Reading Symptoms of Jamestown Canyon

How it spreads

Jamestown Canyon virus spreads to people through the bites of infected mosquitoes.

Keep Reading Jamestown Canyon: Causes and How It Spreads

Prevention

No vaccines or medicines are available to prevent Jamestown Canyon. Reduce your risk of infection by preventing mosquito bites.

Keep Reading Preventing Jamestown Canyon

Testing and diagnosis

See your healthcare provider if you have symptoms after being exposed to mosquitoes in an area where Jamestown Canyon virus spreads.

Treatment

No medicines are available to treat Jamestown Canyon. Antibiotics do not treat viruses. Rest, fluids, and over-the-counter pain medications may relieve some symptoms. In severe cases, patients may need to be hospitalized to receive supportive treatment, such as intravenous fluids, pain medication, and nursing care.

For healthcare providers: Treatment and Prevention of Jamestown Canyon Virus Disease

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Content Source:
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)