I also just lost my 1 year old BLRW rooster to Mareks (my avatar). I have read so much stuff now I am thoroughly confused! I would like to vaccinate every bird I have, older ones, chicks etc. I understand that if they have been in contact with Mareks then the vaccine won't help, does this mean because they already have a natural immunity, but that vaccinating them will not hurt either? I also read if your birds breath they have been exposed and obviously mine have been in direct contact with my roo. Also, if I do vaccinate do I have to do a no birds in or out? If I lost this 1 bird am I compromising other people's flocks now if 1 of my birds joins their flock? So many questions....
Monika