What causes ringworm, a skin infection small pets can pass to people?

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  1. A tiny worm under the skin
  2. A fungus
  3. A virus from wild birds

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References

  1. About Ringworm, CDC www.cdc.gov/ringworm/about/index.html Checked 2026-10-11.
  2. Skin Problems of Guinea Pigs, Merck Veterinary Manual www.merckvetmanual.com/all-other-pets/guinea-pigs/skin-problems-of-guinea-pigs Checked 2026-10-11.

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