The symptoms of parvovirus include lethargy, lack of appetite, vomiting and diarrhoea with a strong odour, sometimes with blood in the faeces.

Once symptoms show, dogs need to get to the vets as soon as possible with treatment including IV and intensive therapy.

Dr Robyn Edelston of Marius Street Small Animal Clinic said the virus was common in spring and summer because of the hot weather and would reappear when the weather got hot again.

“Parvo loves any sort of weather, but particularly dry, summer weather,” she said.

“Spring is when it starts and this warm, humid weather will probably mean it will return and it makes it very easy for it to transfer, too. It transfers on shoes and tyres and doesn’t have to be direct contact.”

Dr Edelston said the only way to guard against the disease is to ensure your dog has the full course of vaccine and the annual booster.

“Puppies are at high risk,” she said. “I’ve never seen parvo in a dog over five years old. Once they’ve had the initial course, they’re fairly well protected, but would recommend ongoing boosters.

“Because puppies’ immune systems are not fully developed, they are much more susceptible to the virus. If the dog has other problems, worms or poor nutrition, that will also make it more susceptible. 

“As well as vaccines, making sure the dog has a good diet and is wormed is important,” she said.

The Tamworth veterinarian said they had seen six cases of the virus since September, which was a lot for the clinic.

“This practice doesn’t see many working dogs and we mostly see indoor pets,” she said.

“Most were at a stage where they required euthanasia, but we’ve treated two or three dogs that have survived.”

Dr Edelston said when people bought puppies they needed to get a vaccination certificate and then see their vet to ensure they know what further vaccinations are required and when.

“It’s very important to bring paperwork to the vet to confirm what the puppy requires, that way there is no confusion,” she said.

“They need to have them on the date they are due.”