Cook County Animal and Rabies Control Urges Residents to Vaccinate Pets Against Leptospirosis as Cases Rise in Chicago

As health officials in Chicago warn of an increase in reported leptospirosis cases with at least one confirmed death, the Cook County Department of Animal and Rabies Control reminds residents to keep their pets safe from this infection.  

Leptospirosis is a bacterial infection that can affect both people and pets. The infection is transmitted through contact with the urine of infected animals, most commonly rats. Leptospirosis is a zoonotic disease, meaning it can be passed between animals and humans. 

To reduce risk, pet owners are advised to keep dogs on a leash when outdoors, avoid floodwater and prevent contact with wildlife. 

A leptospirosis vaccine is available for dogs and is typically recommended annually. Officials urge pet owners to contact their veterinarian to ensure their dog’s vaccinations are up to date. Cats are less commonly infected and do not have a routine vaccination for leptospirosis.