here are all the things he talks about core vaccination - west nile virus eee/wee rabies tetanis reactions - swelling at injection site an alllerigic reaction minimizing the risk's - clean injection site a clean stick (no vines or arterieys) if an allerigic reaction contact vet asap situaltion not vaccition- if reaction consult vet even before doing meds if no record of history - treat as if it were never vaccition Then thats it hope it helped :)