Lepripoxvirus Spurs 'Zombie Squirrel' Sightings in 3 U.S. States

Q: What is the real reason for the recent surge in 'zombie squirrel' sightings across America?

The surge in “zombie squirrel” sightings is being driven by a seasonal outbreak of squirrel fibromatosis, a viral skin disease caused by the leporipoxvirus, not by any new or mysterious threat. Wildlife experts say the disease produces the alarming wart-like growths, hairless patches and sometimes oozing tumors that have prompted the nickname. The condition is common in squirrels, tends to peak in spring and summer, and in most cases clears on its own within four to eight weeks without seriously affecting the animal’s survival. The recent increase in reports is also tied to how the virus spreads. It passes through direct contact with infected lesions or saliva, and bird feeders can become key transmission points because squirrels crowd together there. Biologists have advised homeowners to temporarily remove feeders to reduce close contact among squirrels and slow the spread. Part of the apparent surge is also likely a visibility effect: infected squirrels are easier to notice because of their dramatic appearance, and social media and local news coverage have encouraged more people to report them. Experts stress that the disease is not known to spread to humans, dogs, cats or birds. The advice is to avoid handling infected squirrels and let wildlife professionals manage any concerns.

1 articles · Updated · The Independent · Jun 26

Florida, Michigan and North Carolina residents have reported squirrels with oozing, wart-like tumors this summer, prompting fresh "zombie squirrel" posts online.
Experts say the growths are usually squirrel fibromatosis caused by Lepripoxvirus, a common seasonal infection that often clears without treatment in four to eight weeks.
Rarely, the tumors spread to internal organs and leave squirrels weak or lethargic, but wildlife officials say the disease often does not threaten survival.
Humans, cats and dogs cannot catch the virus, though experts advise against handling infected squirrels and suggest removing bird feeders because crowding helps it spread.