LEPTOSPIROSIS (CATS)

Leptospirosis in cats is a rare bacterial infection that often shows no outward symptoms, but it can cause kidney and liver damage. While cats are much more resistant to the disease than dogs, recent veterinary research confirms they can contract the Leptospira bacteria, become ill, and shed the bacteria in their urine. [

⚠️ Zoonotic Warning: Feline leptospirosis is a public health hazard [2.1]. Infected cats can shed active bacteria in their urine, posing a direct threat of transmission to humans and other pets in the household.

Transmission Mechanisms

• Predatory Hunting: The primary source of infection for cats is hunting and eating infected rodents (mice and rats) that act as natural reservoirs for the disease.
• Environmental Contact: Outdoor cats can contract the bacteria by drinking from, or walking through, stagnant puddles, slow-moving streams, or mud contaminated with wildlife urine.
• Bacterial Entry: The organism enters the cat's body directly through broken skin, scratches, or mucous membranes (eyes, nose, and mouth).

Common Symptoms

Many cats remain subclinical, meaning they carry and shed the bacteria without appearing sick. When clinical disease does develop, it typically targets the kidneys and liver:

• Systemic Signs: Sudden fever, profound lethargy, and a complete loss of appetite.
• Kidney Dysfunction: Markedly increased thirst and frequent urination, which are classic signs of kidney inflammation (nephritis).
• Gastrointestinal Distress: Intermittent vomiting, abdominal pain, and dehydration.
• Advanced Signs: Jaundice (yellowing of the gums, inner ears, or skin) from liver damage, or uncharacteristic bruising/bleeding from damaged blood vessels.

Diagnostic Testing

Veterinarians use a combination of specialized tests to confirm an active infection:

• PCR Testing: Detects the actual DNA of the Leptospira bacteria in blood or urine samples during the early stages of illness.
• Microscopic Agglutination Test (MAT): A blood test that measures the concentration of specific antibodies produced by the cat's immune system against the bacteria.
• Biochemistry Profiles: Standard blood and urine panels are run to evaluate the exact level of stress or damage inflicted on the kidneys and liver.

Treatment Protocol

• Antibiotic Therapy: The primary veterinary treatment is a course of doxycycline to eliminate the bacteria from the body and halt urinary shedding. Penicillin derivatives may be given intravenously if the cat is too sick to tolerate oral medication.
• Supportive Care: Cats showing signs of kidney or liver injury require aggressive intravenous (IV) fluid therapy alongside anti-nausea medications and nutritional support.
• Safe Handling: Owners must wear disposable gloves when cleaning litter boxes or handling urine puddles from a suspected or confirmed infected cat to prevent accidental human infection.

❌ Note: There is currently no commercially available Leptospirosis vaccine for cats. Prevention relies entirely on keeping cats indoors, controlling rodent populations, and preventing them from hunting wild prey.

Is your cat currently showing any of these signs, such as drinking an unusual amount of water or acting weak? If they are unwell, sharing their age and whether they go outdoors to hunt. If yes then go for veterinary doctor check up to rule out disease and proper treatment.