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Where is Eastern equine encephalitis (EEE) commonly found, according to USDA APHIS?

Eastern US and Canada are EEE's usual range.

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  1. The Eastern United States and Canada ✔
  2. Only the desert Southwest
  3. Only the Pacific coast

Why: Eastern equine encephalitis is commonly found in the Eastern United States and Canada. Mosquitoes spread it from birds and rodents, and vaccination repeated at least annually effectively prevents disease.

Huh, didn't know that: APHIS says Western equine encephalitis has not been detected in the United States since the late 1990s.

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We were at a restaurant, and my dad was talking about a place called Sea Ranch. I asked, "What do they raise there? Sea horses?"
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References

Answer: The Eastern United States and Canada. Eastern equine encephalitis is commonly found in the Eastern United States and Canada. Mosquitoes spread it from birds and rodents, and vaccination repeated at least annually effectively prevents disease.

  1. Vector-borne equine encephalitides (USDA APHIS) www.aphis.usda.gov/livestock-poultry-disease/equine/encephalitides
    EEE is commonly found in the Eastern United States and Canada
    Checked 2026-10-10.
  2. Vector-borne equine encephalitides (USDA APHIS) www.aphis.usda.gov/livestock-poultry-disease/equine/encephalitides
    Vaccination, repeated at least annually, effectively prevents disease.
    Checked 2026-10-10.
  3. Vector-borne equine encephalitides (USDA APHIS) www.aphis.usda.gov/livestock-poultry-disease/equine/encephalitides
    WEE has not been detected in the United States since the late 1990s.
    Checked 2026-10-10.

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