I found some online that I may order if any of my incubator chicks actually hatch. Here's the link ... www.jefferspet.com/md-vac-cfl/camid/LIV/cp/F7-J7/cn/3501/.I've asked at all of our area feed/farm stores, TSC included - we haven't been able to find the vaccine for Marek's. My vet said he could come out and administer vx on all the chicks, but all my Aussies were vaccinated when I ordered them...obviously that is going to be a small fortune just for the service call. I can't take them to his office. Where were you able to find vx for your chicks, if you don't mind me asking? Mine will be 2 weeks old tomorrow and something is better than nothing imho...