About Jamestown Canyon

Key Points

  • Jamestown Canyon virus is spread to people by infected mosquitoes.
  • Symptoms can include fever, headache, and fatigue, but disease can also be more severe.
  • There are no vaccines to prevent or medicines to treat Jamestown Canyon virus disease (Jamestown Canyon).
  • Reduce your risk by preventing mosquito bites.
Person applying insect repellant onto their arm.

Overview

Jamestown Canyon virus is spread to people by infected mosquitoes. The 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.

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

There are no vaccines to prevent or medicines to treat Jamestown Canyon. Reduce your risk of infection by preventing mosquito bites.

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