The Centers for Disease Control and Prevention (CDC) has issued a health advisory warning of a significant increase in rabies cases across the United States. The agency noted a 17 percent rise in rabies-related inquiries over the past two months compared to the same period last year. At least eight state health departments have reported an increase in the administration of rabies vaccines or identified errors in their delivery.
Health officials emphasized the importance of careful rabies risk assessments and adherence to evidence-based recommendations for administering treatment, particularly following several high-profile outbreaks and mass exposure events. One such incident occurred less than two weeks ago, when nearly 260 people in North Carolina were potentially exposed to the rabies virus by three unvaccinated baby goats at a mobile petting zoo. These goats had reportedly been bitten by a rabid skunk.
Rabies is a viral disease transmitted through the saliva of infected animals, typically via bites or scratches. Animals known to carry the virus include dogs, raccoons, skunks, bats, and foxes. Once symptoms appear in humans, the disease is nearly 100 percent fatal, with no known cure. However, it can be prevented with a series of five post-exposure prophylaxis shots, including specific administrations on the same day as potential exposure.
To mitigate the risk of infection, health authorities advise the public to avoid contact with wildlife and animals exhibiting signs of illness. Prompt medical attention is crucial if any animal bite or scratch occurs. The CDC also recommends keeping pets up-to-date on their rabies vaccinations and limiting their contact with wild animals. Owners who suspect their pets may have been exposed should consult a veterinarian or public health professional.
While millions of people in the U.S. report animal bites annually, around 100,000 are treated for potential rabies exposure. Historically, fewer than 10 rabies deaths are reported in the U.S. each year, and no human deaths from the virus have been publicly reported in the current year. Between 2015 and 2024, 17 human rabies cases were documented in the U.S., with two individuals contracting the virus internationally. The CDC's advisory was disseminated through its Health Alert Network, which disseminates urgent public health information to healthcare providers and officials nationwide.
The incubation period for rabies can range from three to 12 weeks, during which the virus travels to the brain. Post-exposure treatment, known as rabies post-exposure prophylaxis (PEP), is highly effective if administered promptly. PEP involves an injection of rabies-fighting antibodies and a series of four vaccine doses, with over 99 percent of patients surviving if treated. Without treatment, initial symptoms include discomfort, fever, headache, and itching at the bite site, progressing within two weeks to insomnia, confusion, agitation, hallucinations, hydrophobia, seizures, and ultimately death.