Canine parvovirus is found only in very young animals. True or False?

• A. True
• B. False
• C. It depends on the age distribution
• D. Not enough information

Answer: (B)

Parvovirus infection is highly contagious and causes acute gastroenteritis with vomiting and diarrhea. Puppies are at the highest risk because maternal antibodies can wane and vaccination may not yet provide full protection, creating a window of susceptibility. However, dogs of any age can become infected if they lack protective immunity—unvaccinated adults, those with incomplete vaccination, or animals with waning immunity or immune compromise can still develop disease. The virus can persist in the environment, maintaining exposure risk in kennels and shelters. So, the statement is false: canine parvovirus can affect dogs beyond just very young animals.