Story perspectives

Mutant Deer Warts Raise Health Concerns in US

8/22/2025

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Summary

Story summary

Mutant deer with pus-filled boils, known as deer cutaneous fibroma or "deer warts," have been reported in the US, especially in New York, Pennsylvania, and Wisconsin.
This condition is caused by a virus transmitted by insects such as mosquitoes and ticks.
Similar viral skin issues have been noted in squirrels.
Although generally harmless to deer, these warts may signal underlying health problems.
The virus is species-specific and does not pose a risk to humans.

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Story summary

Mutant deer with pus-filled boils, known as deer cutaneous fibroma or "deer warts," have been reported in the US, especially in New York, Pennsylvania, and Wisconsin.
This condition is caused by a virus transmitted by insects such as mosquitoes and ticks.
Similar viral skin issues have been noted in squirrels.
Although generally harmless to deer, these warts may signal underlying health problems.
The virus is species-specific and does not pose a risk to humans.