Yes its possible. For sure if tested 2 or more weeks after a vaccine is given you should get a Positive Titer. It should be High.
Vaccines do suppress the Immune System. Especially giving these Mumbo Jumbo 5, 6, 7, 8 way vaccines!!!! Which I feel are not necessary. Yes they puppies do need Core Vaccines like Parvo, Distemper and Adeno.
Also maybe his immune system just kicked in to fight the disease. One thing if it was Parvo and he got a sick for one day (with symptoms that you noticed), but he could have had it for some days without symptoms.
There are also 3 different strains of Parvo 2a, 2b and the newer 2c strain.
I know after vaccinations (with a Modified Live Virus) they can shed the disease for some days in their urine and poop. One reason not to have a just vaccinated dog around a non vaccinated dog.
If it was Parvo most likely he probably will not ever get it again. Once a dog shows a Positive Titer or develops the disease naturally and survives for Viruses like Distemper, Parvo and Adeno (not bacteria sickness like Lepto, Lyme, Kennel Cough and others) They will be protected for 5-7yrs and up to the life of the pet. Bacterial vaccines for Lepto, Lyme, Kennel Cough and others their protection just don't last long. This is why they need to be boosted every year. But only if in areas where the possibility is
HIGH! Kennel Cough I would not vaccinate for it. Its just like a human cold.
Most vets use this vaccine schedule for a puppy: Its first vaccination (Parvo, Distemper and Adeno) between 6-8 weeks of age. Then 10-12 weeks and final one between 14-16weeks. But Dr. Jean Dodds has a different one listed below.
Never get a Rabies Vaccine at the same time with any other vaccine. Wait 4 weeks or longer between them.
The most important thing to remember only Healthy Animals Should Be Vaccinated!
Some good reading for you:
Popular Vaccine Posts:
Puppy and Kitten Vaccines: Timing is critical
Dr. Jean Dodds' Canine Vaccination Protocol 2016
Dr. Jean Dodds' Feline Vaccination Protocol 2013-2016
Avoid Unnecessary Vaccines with Titer Tests (Part III)
Frequently Asked Questions about Titers and Vaccination Protocol by Dr. Dodds
Dr. Jean Dodds' Pet Health Resource Blog
Considered one of the foremost experts in pet healthcare, Dr. Dodds focuses on vaccination protocols, thyroid issues and nutrition.
Visit Hemopet.org or Nutriscan.org for more information.
The following vaccine protocol is offered for those dogs where minimal vaccinations are advisable or desirable. The schedule is one I recommend and should not be interpreted to mean that other protocols recommended by a veterinarian would be less satisfactory. It’s a matter of professional judgment and choice.
9 - 10 weeks of age
Distemper + Parvovirus, MLV
e.g. Merck Nobivac (Intervet Progard) Puppy DPV
14 – 15 weeks of age
Distemper + Parvovirus, MLV
18 weeks of age
Parvovirus only, MLV
Note: New research states that last puppy parvovirus vaccine should be at 18 weeks old.
20 weeks or older, if allowable by law
Rabies – give 3-4 weeks apart from other vaccines
Mercury-free (thimerosol-free, TF)
1 year old
Distemper + Parvovirus, MLV
This is an optional booster or titer. If the client intends
not to booster after this optional booster or intends
to retest titers in another three years, this optional booster at puberty is wise.
1 year old
Rabies – give 3-4 weeks apart from other vaccines
3-year product if allowable by law; mercury-free (TF)
Perform vaccine antibody titers for distemper and parvovirus every three years thereafter, or more often, if desired. Vaccinate for rabies virus according to the law, except where circumstances indicate that a written waiver needs to be obtained from the primary care veterinarian. In that case, a rabies antibody titer can also be performed to accompany the waiver request. Visit
The Rabies Challenge Fund for more information.
W. Jean Dodds, DVM
Hemopet /
NutriScan
11561 Salinaz Avenue
Garden Grove, CA 92843
he doesn’t interact with other dogs
on this site! 
