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A group of rabbits in Colorado with grotesque growths resembling horns, popularly referred to as "Frankenstein rabbits" or "zombie rabbits," have caused alarm in the United States. However, the truth is that these creatures are not straight out of fiction films; they simply have a relatively common virus.
Neighbors in Fort Collins, Colorado, reported the presence of wild cotton-tail rabbits with strange black protrusions. Specialized magazines in science and authorities from the Department of Natural Resources (DNR) explained that the animals are infected with the Shope papillomavirus.
The images shared by residents quickly went viral, with interpretations ranging from AI-generated hoaxes to theories about a dangerous disease.
However, local authorities clarified that this refers to the Shope papillomavirus, a condition exclusive to white-tailed rabbits (Sylvilagus), discovered in 1930 by a professor at Rockefeller University.
Iowa DNR explained that the disease is primarily transmitted in summer, through insects that bite animals.
Although the bumps can take on striking shapes, they do not pose a risk to other mammals or humans. Only in cases where they interfere with the rabbit's feeding or vision can they become harmful.
The virus affects the three subspecies of cotton-tailed rabbits that inhabit Colorado —the mountain, desert, and Eastern varieties.
In most cases, the injuries disappear after the summer, although they may reappear the following year.
Kara Van Hoose, spokesperson for Colorado Parks and Wildlife, stated this Wednesday to The Associated Press that the agency has received calls about the rabbits spotted in Fort Collins.
In his communication, he noted that it is not uncommon to see infected rabbits, especially in the summer, when the fleas and ticks that spread the virus are more active.
The virus can be transmitted from one rabbit to another, but not to other species, including humans and pets, he explained.
Growths resemble warts, but they can look like horns if they grow larger, said Van Hoose.
Experts recommend avoiding contact with wild rabbits and, in the case of domestic animals showing similar symptoms, to see a veterinarian, as the disease can manifest more severely in them.
Frequently Asked Questions about the Shope Papillomavirus in Rabbits in the U.S.
What is the Shope papillomavirus and how does it affect rabbits?
The Shope papillomavirus is a condition exclusive to white-tailed rabbits, discovered in 1930, that causes horn-like growths on the heads of the animals. Although the protrusions may be striking, they pose no risk to other mammals or humans, unless they interfere with the rabbit's feeding or vision.
How is the Shope papillomavirus transmitted among rabbits?
The virus is primarily transmitted through insects, such as fleas and ticks, which bite rabbits, especially during the summer. The virus can pass from one rabbit to another, but not to other species, including humans and pets.
Is the Shope papillomavirus dangerous for humans or pets?
The Shope papillomavirus does not pose a threat to humans or pets. It only affects white-tailed rabbits, and authorities recommend avoiding contact with infected wild rabbits.
What measures should be taken if a rabbit is found with the Shope papillomavirus?
It is recommended to avoid contact with infected wild rabbits. If you have pets that exhibit similar symptoms, it is important to visit a veterinarian, as the disease can manifest more severely in domestic animals.
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