Cryptosporidiosis is an important cause of gastroenteritis and diarrhea in a variety of animal species, including humans. It is caused by a ubiquitous protozoan of the genus Cryptosporidium. The most common species of Cryptosporidium affecting domestic mammals is Cryptosporidium parvum.

Cryptosporidiosis may be a primary disease, although it is often seen as a secondary disorder in dogs and people with compromised immune systems. Crowding and unsanitary conditions increase the risk of exposure. Young dogs may be more susceptible to infection.

The impact of the disease tends to be minimal in dogs that have a competent immune system. Immunocompromised dogs, however, may develop clinical signs after infection.

What to Watch For

Diarrhea

Poor appetite

Weight loss

Diagnosis

Fecal examination

Serology

Animal inoculation

Intestinal biopsy

Treatment

In some cases, no treatment is necessary. For others, treatment may include:

Antibiotics

High fiber diet

Supportive therapy

Home Care and Prevention

Administer all medications as prescribed. Try to disinfect any contaminated area, although this may be difficult to do. Boil any water collected in the field for drinking and prevent your dog from ingesting feces.