Dog Leptospirosis Prevention in Urban and Rural Dogs

Leptospirosis is a re-emerging zoonotic disease in dogs with increasing urban cases, preventable through vaccination and environmental awareness.

Key Facts

Leptospirosis is caused by Leptospira bacteria transmitted through contact with infected animal urine or contaminated water
Wildlife reservoirs including raccoons, skunks, opossums, and rodents maintain leptospirosis in urban environments
Cases have increased significantly in northeastern US urban areas, challenging the assumption that lepto is primarily rural
Clinical signs include acute kidney failure, liver disease, fever, and muscle pain
Modern bivalent and tetravalent vaccines provide good protection against the most common serovars
Vaccination is recommended annually in endemic areas and for dogs with outdoor exposure or wildlife contact
Leptospirosis is zoonotic - infected dogs can transmit the disease to humans through contact with infected urine

Welfare Considerations

Acute leptospirosis causes rapid, severe kidney and liver failure that causes significant suffering and carries mortality rates of 10-20% even with treatment. Survivors may have permanent kidney damage requiring lifelong management. Vaccination prevents infection at low cost - the welfare case for routine lepto vaccination in dogs with outdoor exposure is compelling.

What You Can Do

Discuss leptospirosis vaccination with your vet if your dog has outdoor exposure or contact with wildlife
Avoid allowing dogs to drink from standing water, puddles, or slow-moving water in endemic areas
Wear gloves when handling a dog with suspected leptospirosis - it is transmissible to humans
Seek prompt veterinary care for any dog with fever, kidney signs, or jaundice after outdoor exposure
Report leptospirosis cases to your local veterinary public health authority as part of disease surveillance