Mareks-Can I vaccinate 4 week old chicks now?

[buckeye lady]

I have peeps < 1 week I hatched and some 4 week old Chicks I bought last week. Can the 4 week olds be vaccinated for Mareks now? I haven't been able to find any info on this in my books or online.

 

[Indiana hens]

Sure can.
You can also give a booster to older chickens. Newcastles vaccine requires a booster.

 

[CarriBrown]

You can vaccinate for Marek's at any age. Go to my personal page if you need help on where to buy the vaccine and how to administer it.