Can a two year old dog get parvo if he's had a parvo shot?

Most adult dogs that were appropriately vaccinated against parvo as puppies - meaning 3 different vaccinations, given no earlier than 8 weeks of age and proceeding at 3 - 4 week intervals - are protected against contracting parvovirus, as long as they receive booster vaccinations as recommended. Typically, the recommendation is one vaccination on the one year anniversary of the last puppy vaccination, and then re-vaccination every 3 years after. Just one parvo vaccination is unlikely to be completely effective, but it may provide some protection, and if he contracts the disease it will likely be a milder form.

If your dog was up to date on her parvovirus vaccine (if you check your vaccine records, it is usually given as a distemper/parvo combination vaccine, often abbreviated as DHPP or DAPP), she is very unlikely to contract parvovirus. Vaccinated dogs can still get this disease, but it's pretty uncommon. The best way to protect her from getting this virus is to keep her up to date on the vaccine, and seek prompt vet care if she shows any signs of illness.

Immunity is generally quite strong after surviving parvo but there are additional diseases which should also be protected against so he should still receive his vaccinations. As parvovirus depletes the immune system during infection it would be advisable to delay vaccines for 4-6weeks and to keep him isolated from other dogs in the meantime so he does not contract additional infections whilst he is recuperating. He is also a risk to other dogs for 3-6weeks as he will continue to shed parvovirus and be a potential source of infection for others so he should be kept in an enclosed area and all faeces disposed of responsibly to reduce the risk of spread