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Capillariasis in Dogs

Infection with Capillaria plica in Dogs

Capillariasis is a type of dog worm caused by a parasitic known as Capillaria plica. The worm infects the urinary bladder and sometimes other parts of the urinary tract.

Symptoms and Types

Often, there are no symptoms and diagnosis is incidental. However, especially in dogs with a heavy infection, symptoms include:

  • Frequent urination
  • Painful urination
  • Bloody urine
  • Straining to urinate

Causes

Capillaria plica is the parasitic dog worm that causes capillariasis. Its lifecycle is not completely understood. However, we know that ova (worm eggs) pass out of the body through the urine of infected dogs. These ova embryonate and then may be ingested from the soil by earthworms. The Capillaria worm then continues to develop inside the earthworm to an infective stage. When another dog then ingests the earthworm, infection can occur.

Diagnosis

Diagnosis is through identification of Capillaria ova in the urine of the infected dog. The ova are characteristic in appearance: football-shaped with plugs at both ends of the ova.

 
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