Leptospirosis in dogs - A risk to owners

Learn about Leptospirosis: its bacterial causes from animal urine, critical symptoms, and effective prevention tips to stay safe from this global health threat.

6 September, 2025

Don't underestimate the risk of Leptospirosis, a bacterial disease that can turn life-threatening if ignored. This widespread infection poses a particular danger to outdoor enthusiasts and those in flood-prone areas. Equip yourself with essential knowledge about its causes, symptoms, and prevention to protect your health effectively.

What are the main causes of Leptospirosis?

  • Leptospirosis is caused by bacteria of the genus Leptospira, which are commonly found in the urine of infected animals, including rodents, livestock, and domestic pets.
  • Humans typically contract the disease through direct contact with infected animal urine or, more commonly, through contact with water, soil, or food contaminated with this urine.
  • Entry into the body usually occurs through cuts or abrasions on the skin, mucous membranes (eyes, nose, mouth), or by ingesting contaminated water.
Identifying leptospirosis symptoms in humans for early care

Key symptoms of Leptospirosis to watch for

  • Symptoms often appear suddenly, including high fever, severe headache, muscle aches (especially in the calves and back), chills, vomiting, and sometimes a rash.
  • In some cases, the disease progresses to a more severe form, known as Weil's disease, characterized by jaundice (yellow skin and eyes), kidney failure, and bleeding.
  • Other serious complications can involve meningitis, liver damage, respiratory distress, and in rare instances, even death, highlighting the importance of early diagnosis.

How can you prevent Leptospirosis effectively?

  • Avoid swimming or wading in freshwater that might be contaminated with animal urine, especially after heavy rainfall or in areas known to harbor infected animals.
  • Wear protective clothing, such as waterproof boots and gloves, when working in wet conditions, agricultural fields, or any environment potentially exposed to contaminated soil or water.
  • Control rodent populations around homes and workplaces, and ensure pets are vaccinated against Leptospirosis, as they can also be carriers and transmit the bacteria.

>>> See this article: Ebola Virus Disease: Facts, Symptoms, and Prevention

Image of the disease Leptospirosis

The leptospirosis vaccine for dogs is a key preventative measure
A veterinarian checks a pet with leptospirosis in dogs
Understanding how do you get leptospirosis from the environment
Proper leptospirosis treatment can prevent severe illness
Learning if is leptospirosis contagious between pets and people

>>> Discover more: Filariasis: Diagnosis, Treatment, and Management

Leptospirosis is a serious but preventable illness. Recognizing its risks and adopting preventive measures are crucial for safeguarding your health. If you experience symptoms after potential exposure, seek immediate medical attention for timely diagnosis and treatment.

>>> Read more here: Understanding Human Immunodeficiency Virus (HIV)