Hey there! The latest topic in my house is this injection site sarcoma thing. I learned about this before my new kittens so the vet Im using for them seems to be aware of it is using the purevax rabies etc. My other vet that I use for my older cats however, I am not sure. They seemed up to date and have great reviews. I have used that vet for a long time and they have been very helpful with managing some chronic issues such as diabetes with my one cat. They require rabies due to state law but only do 1 year and I am unsure of the type yet. A couple days ago I had to take two of my older cats that got into a fight in because one has a swollen lymph node ( the diabetic, we are unsure if its related to the fight or not yet unfortunately.) And both got the convenia shot as a preventative for fight wounds. I have read some negative things about that one but this vet loves to use it and I had not had an issue so far. In fact, the second cat I mentioned has had chronic nasal congestion, had gotten into a fight before that needed antibiotics and chews on his belly that caused a mild skin infection not even a month ago. All times the vet just wanted to give Convenia so thats 4 times this year he has had it. Now Im learning there is apparently adjuvant in that shot as well and all injections should *always* be minimized in cats? I will insist to go a different route in the future but I feel like I have let my cats down by not knowing and am concerned with this vet that I've trusted and used a long time now and Im not sure if its justified. I have even read that microchips could be an issue with it and now I am thinking of not doing that for the new kittens as planned. Any thoughts from others are appreciated.