Thanks for the response. I know they remain carriers for life, but because I'm not breeding and because this is apparently endemic, I'm not culling if I don't have to.
After my favorite hen started getting conjunctivitis I treated with tylan 50.
Sigh.
Anyway, I found this study, which some...
First off, let me just say a HUGE thank you to those of you who have given generously of your time, wisdom and experience. I have spent quite a bit of time here doing research. etc., and the information has been EXTREMELY helpful. (And on a side note, I found this site --also very helpful, and...