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How Many Shots Do Puppies Need For Parvo. It seems like a very long 17 weeks! For dogs who are older than 16 weeks but have never been vaccinated, the number of initial doses is reduced to one or two.
At 9 weeks, 88% of the puppies showed a response to the parvovirus vaccine. Don’t get a parvo booster shot for your puppy At least 3 doses, given between 6 and 16 weeks of age.