Urban Vet, Clare Morris D.V.M on
GIARDIA

A common problem seen in the pacific northwest is Giardia. Especially in western Washington. The reason for this is the wet environment and temperate climate, which allows the parasite to thrive. Giardia is a single celled parasite that affects the gastro-intestinal system. It can cause a wide range of symptoms. These can include severe diarrhea, mild diarrhea that comes and goes, vomiting and lethargy, and sometimes no symptoms at all. Dogs that are infected but show no clinical symptoms make the spread of the parasite hard to control. Also it is important to remember that it is possible for giardia to be spread to people.

Dogs can pick up giardia from other dogs that are infected, from stagnant water (i.e. puddles, water bowls at your favorite coffee joint, ponds, lakes), and from contaminated grass and soil. Wildlife such as raccoons can also spread giardia so back yards can also be affected. This parasite is introduced into the environment by fecal contamination and can survive for a long time in wet or moist environments.

Dogs can be easily tested for giardia, but if a dog has no symptoms, it is less likely to be performed. Once a dog has had giardia, it can get it again and again unless the contamination source is removed. The more a dog comes into contact with other dogs or drinks from standing water, the greater the chance of picking up this parasite. There are medications to effectively treat this disease, but no preventative. There is a giardia vaccine that is not very effective and currently is not recommended as a “core” or standard vaccine.

If you have more questions about giardia prevention, testing and treatment, please contact your veterinarian.