Why would my puppy need a 4th DHPP shot if 3 are standard?

Question

Hi my male french bulldog was born on 7/2/21. He had his first dhpp at nearly 6 weeks on 8/12/21. He had his second dhpp at nearly 13 weeks on 9/29/21. He had his rabies and third dhpp at just over 15 weeks on 10/18/21. The vet suggested a fourth dhpp on 11/8/21 because of the timing of the others. Does this make sense? I was under the impression that puppies get a series of three dhpp vaccinations.

Lauren Jones VMD · Accepted Answer

Your vet is absolutely correct in recommending a fourth booster in this case. The total number of DHPP boosters given is based on the age of the puppy and timing of the boosters. This vaccine is given every 3-4 weeks of age until a puppy is at least 16 weeks old. Puppies are initially protected by antibodies from their mother, which they acquired both through the placenta and milk. These antibodies must wane in order for the puppy to mount their own longer-lasting protective antibodies against these viruses. The maternal antibody protection wanes at different times for each individual puppy, but they should mostly be gone by the 16 week mark. For this reason, the last booster should be after 16 weeks of age to ensure that the puppy has properly developed their own protective antibodies. I've included a few articles below for further reading. I hope this helps clear up any confusion and that you enjoy your little pup! https://www.petcoach.co/article/vaccination-recommendations-for-puppies-puppy-shots/ https://www.petcoach.co/article/colostrum-and-passive-immunity/

Why would my puppy need a 4th DHPP shot if 3 are standard?

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