Companion Animals

Dog Leptospirosis: Prevention and Urban Welfare

Leptospirosis is a potentially fatal bacterial disease spread through water contaminated by infected animal urine; vaccination and environmental awareness protect dogs in urban and rural settings.

Key Facts

Leptospirosis affects dogs worldwide with increasing incidence in urban areas
Rats are a major reservoir and urban waterways are a common transmission route
Clinical signs include kidney failure, liver disease, fever, and uveitis
The modern 4-serovar vaccine provides broader protection than older 2-serovar products
Leptospirosis is zoonotic - infected dogs can transmit the disease to humans

Welfare Considerations

Leptospirosis causes severe, often fatal illness characterized by acute organ failure. Dogs may appear mildly unwell initially before rapid deterioration into kidney and liver failure requiring intensive hospitalization. Prevention through vaccination is highly effective and represents an important welfare intervention for dogs that access urban parks, rivers, or rural environments where reservoir animals are present.

What You Can Do

Vaccinate dogs annually against leptospirosis especially if they swim or have water access
Avoid allowing dogs to drink from stagnant water sources in urban or agricultural areas
Wear gloves when handling sick dogs showing possible leptospirosis symptoms
Discuss 4-serovar vaccination with your vet for dogs at higher exposure risk