Leptospirosis is a bacterial infection caused by a class of bacteria that can infect a number of mammals including humans, and affects the kidneys, liver, and other organs.


Fever, shivering, and muscle tenderness are the first signs. Then vomiting and rapid dehydration may develop with hypothermia in severe cases.


Leptospirosis is a highly contagious bacteria that enters through the mucous membranes then enters the blood stream where it attacks other organs such as the kidneys, liver, spleen, eyes, genital tract, and nervous system. This bacterial infection can become chronic, lasting several years causing many organ problems while shedding infection. Animals can thus become chronic carriers of the disease.

Leptospirosis comes in numerous strains and effects many different animals. It can be spread in many ways, often through water sources. Water sources used by infected animals is often a source of infection.


Leptospirosis can cause liver and kidney damage and a variety of other organ damage including damage to the nervous system. Animals can develop life long infection of these organs and continue to spread the infection.


Yes, due to organ problems.


Treatment with antibiotics.


Vaccination exists for only two strains of Leptospirosis in dogs. Many other strains exist and prevention includes protecting dogs from pests, wild and stray animals, and possibly infected environments such as water sources used by other animals.

Danger to Humans:

Yes. Humans are susceptible to many strains of Leptospirosis and care should be taken with infected animals.

Danger to Other Animals:

Yes. Leptospirosis affects many different animals and is easily spread with direct contact and through the environment.