I just posted a question about a post-Marek's survivor and reintegrating her into the flock, when I came upon this thread and thought I'd respond. One of my 4-week old Buckeyes became paralyzed (both legs and one wing) w/ Marek's in the brooder. Vet said cull her; I took her home and isolated her; she was suspended in a harness for 7 weeks, hand-fed, bathed daily, etc. The other 11 are still asymptomatic and have since all moved out into the coop/run/free-range and are doing great. They were all vaccinated at the hatchery. After researching, I ended up giving hypericum perforatum and causticum (1 tab of each in 1 T distilled water - mixed separately and w/ separate eyedroppers - 2x/day) for 7 weeks. I also supplemented with nutritional yeast (full spectrum of B vitamins) in her food and vitamin B12 in her water. I was mentally prepared to have a very permanently special-needs chicken.
As of last week she's regained use of both legs and wings, is preening like a pro, gaining weight and walking around. I'm now wondering about reintegration into the flock; I believe that the entire flock was exposed to the virus in the brooder, but since the others' vaccinations let them remain healthy, I wonder if there's still a risk in letting the now-well chicken back in?
Reading all the literature about "no treatment" for Marek's is depressing, and although I fully understand that some of forms the virus takes may not be treatable (especially internal tumors), I've come to believe that the paralysis is, at least in some cases.
ShyPeep