Companion Animal Welfare

Dog Welfare and Leptospirosis Vaccination

Leptospirosis is a zoonotic bacterial disease causing severe welfare harm in dogs. Vaccination provides effective protection for at-risk dogs and reduces zoonotic transmission.

Key Facts

Leptospirosis causes acute renal and hepatic failure with high mortality in dogs
Rats and contaminated water are the main sources of infection for dogs
L4 vaccines cover four serovars including the most clinically significant variants
Annual booster is required for ongoing protection
Dogs in rural areas and those with water access face highest exposure risk

Welfare Considerations

Leptospirosis causes severe, often fatal welfare harm in infected dogs. Vaccination provides effective protection for the small cost of annual boosters.

What You Can Do

Vaccinate with L4 if your dog has access to water, farmland, or wildlife habitat
Maintain annual booster vaccinations for ongoing protection
Seek immediate veterinary care for dogs with sudden onset illness after water exposure
Learn about leptospirosis signs and the importance of prompt treatment