We have had Marek's ripping through our flock. It started last year, killing one by one. We thought it dropped and then I guess the heat stirred it back up. We've lost 7 since the summer began. We're down to two. One is still doing well, just starting to shake her head like a resp infection (this is the first sign we've noticed in all of them) The other has not been eating, we've been tube feeding with vet assistance. They've been very helpful. The reason this time is hard is they are my last two babies, my last angels. I just have not figured out what to do. Um... should I have them put down at the same time. They are very social, they enjoy each other. They are sisters. They love each other and have never gotten along when we tried adding new birds to the flock. We are still at a loss of how Marek's got in. We did no shows, no birds except from NPIP breeders. Any help?