Parvovirus is seeing its biggest surge in 20 years - and vets are begging owners to get their puppies vaccinated

The contagious canine virus, is common in urban areas.

However, Veterinary Association's Sally Cory, says there are a number of factors that increase cases.

She says the numbers of unvaccinated puppies, and warmer weather, are two of the main reasons.

Sally Cory says puppies ill health could be prevented, just by properly vaccinating.