My brother brought our puppy to get his first pack of vaccinations at a clinic. The puppy package included the 5-in-1, Bordetella, Corona, a dewormer. My brother said that the vet gave him 1 shot, 1 intranasal and 1 dose of something he ate, which doesn't sound right to me at all. They should have given him 2 shots?? I'm hoping that my brother just didn't see the second shot, but if the vets really missed a shot would something bad happen if he gets the booster? Are the first shots and boosters all the same, or are the boosters stronger? Also, can I still opt out of the Corona and Bordetella boosters even though he already got the first dose? I've been reading a lot of articles about over vaccinating and how the Corona vaccine isn't necessary for pups over 6 weeks, how the Bordetella vaccine isn't necessary for dogs that won't be boarded and I've been convinced that I should only get what's necessary.