West Cook News

The Cook County Department of Animal and Rabies Control (ARC) has launched an interactive map showing locations where bats that tested positive for rabies have been found in the county this year. Three rabid bats have been identified so far in 2025. The map, released during Halloween, aims to increase public awareness about rabies prevention.

“Rabies is a completely preventable disease and is always fatal to unvaccinated pets,” said ARC Administrator Dr. Mamadou Diakhate, DVM. “Ensuring your dogs and cats are current on rabies vaccinations and other vaccinations is critical to their health and yours.”

Dr. Diakhate noted that most of these bats are discovered inside homes, which means even pets that stay indoors can be exposed to rabies. The Centers for Disease Control and Prevention (CDC) reports that each year approximately 60 to 70 dogs and 250 cats contract rabies.

For over forty years, the Forest Preserves of Cook County has conducted surveys and research on local bat populations, identifying nine species in the area. About half of these species live in large colonies, while others are solitary or form small family groups in trees or shrubs.

Cook County’s Geographic Information Systems (GIS) Department developed the new map using data from ARC. "A GIS map helps turn statistics into a story,” said Wig Ingente, GIS program coordinator. “We're using this technology to transform abstract health warnings into a tangible, visual tool that helps residents instantly understand the real-world risk in their own neighborhoods."

To limit the spread of rabies, ARC organizes low-cost or free Partners in Prevention clinics where pets can receive vaccines and microchips. This year alone, more than 50 clinics have vaccinated over 6,000 pets against rabies and provided around 3,000 microchips.

Residents are advised not to handle wild animals such as bats. Bats play an important ecological role by consuming insects like mosquitoes; a single little brown bat can eat half its body weight in insects nightly.

Chris Anchor, senior wildlife biologist for the Forest Preserves of Cook County, emphasized the environmental importance of bats: “Bats are amazing flying mammals that act as important bio monitors, helping to indicate the health of our environment.”

Rabies remains almost always fatal for humans if untreated. The virus spreads through saliva when an infected animal bites or scratches another animal or person. According to CDC guidance, anyone who comes into contact with wildlife or unfamiliar animals—especially if bitten or scratched—should consult healthcare professionals regarding possible exposure.

More information about rabies prevention is available at www.cookcountyil.gov/service/rabies-prevention.