What Every Puppy Owner Needs to Know About Parvo in Puppies

 The last thing any new puppy owner or dog breeder wants to hear is a diagnosis of parvo. Parvo in puppies is unfortunately a common disease with deadly consequences, which is why it is important for anyone dealing with puppies on a regular basis to be aware of the symptoms of parvo and what to do about it.

What Is Parvo?

Parvo in puppies is caused by the canine parvovirus. This virus is highly contagious and spreads through direct contact with an infected dog or by indirect contact with a contaminated object. Your puppy is exposed to the parvovirus every time he sniffs, licks, or consumes infected feces. Indirect transmission occurs when a person who has recently been exposed to an infected dog touches your puppy, or when a puppy encounters a contaminated object, like a food or water bowl, collars and leashes, and the hands and clothing of people who handle infected dogs.

The Merck Veterinary Manual classifies the virus as a disease of the stomach and small intestines, as this is where the virus does the most damage. The virus prefers to infect the small intestine, where it destroys cells, impairs absorption, and disrupts the gut barrier. Parvo in puppies also affects the bone marrow and lymphopoietic tissues, and in some cases can also affect the heart.

Why Do Puppies Get Parvo?

Puppies ages six weeks to six months are the most susceptible to parvo. Puppies younger than six-weeks-old still retain some of their mother’s antibodies, assuming that the dam received her full series of parvo vaccinations. Puppies are vaccinated against parvo at approximately 6, 8, and 12 weeks of age. They are vulnerable to the disease until they have received all three shots in their vaccination series, which means owners need to take extra precaution during this time to prevent their puppies from contracting the virus. Puppies should receive a dose of canine parvovirus vaccine between 14 and 16 weeks of age, regardless of how many doses they received earlier, to develop adequate protection.

The severity of parvo cases varies. The stress of weaning can lead to a more severe case of parvo n puppies, as stress weakens the immune system. A combination of parvo and a secondary infection or a parasite can also lead to a more severe case of parvo in puppies.

To top it off, certain breeds of dogs are at an increased risk of parvo:

• Rottweilers
• Doberman Pinschers
• American Staffordshire Terriers
• English Springer Spaniels
• German Shepherd Dogs
• Labrador Retrievers