Does my 6-month indoor kitten need booster shots after initial shots?
Hello. Thank you for using Petco Pet Education Center, formerly Petcoach! Great question!
The recommended vaccination schedule for kittens is first shots at 8 weeks of age and then two sets of boosters at 12 and 16 weeks of age. You would be surprised how many times an owner has told me the kitten "had all of it's shots already" only to find out it only received one set.
If Roky at all three sets of vaccines as stated above, then no, he doesn't need boosters. If the vaccine booster sets were not given at the correct interval (every 3-4 weeks) then he would need a booster.
If Roky only received one set of vaccines or two sets, then he would need an additional booster.
No offense, but if the vet is recommending the vaccine boosters then it is likely necessary. I would go with what the vet says before going with what the rescue says. It is a small price to pay to make sure he has the proper immunity going forward.
Even if he is indoors only you want to make sure he has been properly vaccinated just in case he gets outdoors (this happens a lot). Also, I don't know where you live but in cases of emergencies (like hurricanes) people have to evacuate and the animals are sometimes boarded or kept with other animals that may have never had vaccines. The vaccines are for his protection.
At the end of the day, it is up to you whether or not you want to do the boosters. I personally think it is better to be safe than sorry and get him the boosters.
Hope this helps. Best wishes.
Updated on September 23rd, 2025