Do most hatcheries vaccinate their breeding stock for Marek's/other diseases?

[Farmlife16]

I have no history of Marek's in my flock, but I was wondering...If I buy unvaccinated chicks from breeding stock that was vaccinated, will the chicks carry antibodies? And could those antibodies spread the disease to my existing flock?

 

[Eggcessive]

No hatcheries do not vaccinate chicks unless you ask for them. Mareks and coccidiosis vaccines are the only ones I know of that they will do, and they cost extra. I have bought both vaccinated and unvaccinated chicks and raised them together with no cases of Mareks ever in 12 years. Feed store chicks do not come with vaccinations unless they are special ordered.