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A Rare Dog Rabies Case Stirs Concern in Illinois

Chicago, Illinois, USAWednesday, December 24, 2025
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Chicago, Illinois - A shocking event has taken place in Chicago, Illinois. A young dog was found to have rabies, a disease not seen in a dog in the state for over three decades. The dog, less than a year old, was part of a rescue effort from the Southeastern U.S. and was adopted by a local family.

Unusual Behavior and Tragic Outcome

The dog's behavior became increasingly aggressive and unusual. It bit someone on December 11, and despite being vaccinated earlier in the year, it had to be observed for ten days as required by state law. By December 16, the dog's behavior worsened, showing signs of growling, snapping, barking, and anxiety. It was euthanized on December 18, and tests confirmed it had rabies.

The Dangers of Rabies

Rabies is a serious and often fatal virus that affects the nervous system. It is usually spread through bites or scratches from infected animals. While rare in humans and pets due to widespread vaccination programs, it can still be a threat, especially from wildlife. The last recorded case of dog rabies in Illinois was in 1994.

Unanswered Questions and Vigilance Needed

The source of the infection remains a mystery. The dog was vaccinated, but it might have been exposed to the virus before the vaccine took full effect. Officials are investigating how the dog contracted rabies, testing for matches with variants found in bats, raccoons, and foxes. The person bitten by the dog and others who had contact with the animal are being evaluated for treatment.

This case serves as a reminder of the importance of keeping pet vaccinations up-to-date. It also highlights the need for veterinarians and their staff to be vigilant about rabies. The dog's littermates and other dogs that came into contact with it are also being monitored.

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