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Yersinia Infection in Guinea Pigs

Yersiniosis in Guinea Pigs

 

Yersiniosis is the term used for an infectious condition that arises when a guinea pig has been exposed to the bacteria Yersinia pseudotuberculosis. Transmission of the yersinia infection can occur through contact with contaminated food, bedding and other materials, though contact or incidental ingestion of infected urine or feces, through inhalation of airborne yersinia cells, or the bacteria can enter the body through otherwise minor cuts or scrapes in the skin. From the time of the initial infection to the full blown disease condition, the illness may take several courses. Once the infection has taken a strong hold, the general outcome of Yersinia infection in guinea pigs is poor.

 

Yersinia infection can spread quickly and diagnosis can be quite difficult as the guinea pig exhibits no specific signs early in the disease process, and blood tests would be needed to confirm that the guinea pig is indeed suffering from yersiniosis. Without symptoms, there is often no reason to suspect a problem requiring veterinary treatment, allowing the bacteria the opportunity to spread throughout the body. Often, once the infection has been found and diagnosed conclusively, treatment is not a viable option. It is therefore important to tale steps to preventing yersiniosis from arising in the first place.

 

Symptoms and Types

 

In some cases, an infected guinea pig will be infected without showing symptoms of yersinia infection. Other times the guinea pig will display signs and symptoms such as:

 

  • Swollen lymph nodes in the neck or shoulder
  • Diarrhea
  • Weight loss
  • Bacteria in the bloodstream (bacteremia) and cause sudden death (if not treated quickly) 

Causes

 

Infection with Yersinia pseudotuberculosis bacteria may come about through contaminated food, bedding, or water. The Yersinia bacteria can also enter a guinea pig's body through cuts or scrapes in the skin, or through inhalation of airborne yersinia cells.

 

Diagnosis

 

A complete blood profile, urinalysis, and physical examination will be conducted. Your veterinarian may be able to make an initial diagnosis based on the outward symptoms your guinea pig is showing. If the infection became apparent at too late a stage, and your guinea pig suffers a sudden death, postmortem observations can be made on the physical manifestations (like swollen lymph nodes), so that your veterinarian can determine whether the death was the result of yersiniosis. Further postmortem tests will determine if you need to take immediate preventative actions with your surviving guinea pigs.

 

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