My puppy got one DHPP shot. Does he need a full vaccine series?

Question

My puppy is 16 weeks now but has only received shots when he was 7 weeks. Is it really necessary for him to go through the process of doing a series of 3 DHPP shots? Could I just get him the DHPP vaccine once or does he really need to do it every 2 weeks. Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | unneutered | 3 months and 9 days old | 4 lbs

Andrea M. Brodie, DVM · Accepted Answer

The first vaccination by now will have lost all effectivity. So you are starting basically from the beginning. Your puppy will need three courses of DHPP as a basic core course of vaccinations. It will also need a rabies shot. These will need a booster after one year and then he will only need vaccinations every three years. If you only vaccinate once, the body will not make the specific antibodies necessary for the viral diseases covered, but will only initiate a general immune response. Only the second and third course will then entice the body's immune system to make specific antibodies. Vaccines are given in 2-3 week intervals.

My puppy got one DHPP shot. Does he need a full vaccine series?

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