Marek's, new and vaccinated, but still scared


Flock Mistress
Premium Feather Member
15 Years
Sep 6, 2007
Corydon, Indiana
My flock is Marek's exposed from 2 years ago. I didn't know it until I got new chicks a few months ago and they all died. Now I have hatched new chicks, and vaccinated them, but I am still scared.

Would anyone recommend vaccinating twice? Or is twice overkill?


9 Years
Apr 19, 2010
Oakland hills, CA
If you have vaccinated them shortly after hatching, and before exposure to other birds, you probably are going to be ok. You may want to keep them seperated for a few weeks - I'm not sure how long it takes for immunity to build after the vaccination. You may want to check with the vaccine manufacturer on that (or google). I don't think a second vaccine would make a difference - I think immunity will build just fine on the .2cc dose.

I share your fear - I just innoculated my first batch of hatches two days ago and am worrying about everything from did I get it enough in and properly to what if they have a vaccine reaction. So far, they look great and I figure they need to brood for at least a couple more months before heading outside so I am going to trust that I did the best I could and that they will be fully immune by the time they feather out and go outside.

Good luck! Breathe...

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