It does cause a lower production of eggs for life because this disease lives in their system, making them immune compromised for life. They’ll also be forever carriers as well.. so I suggest a closed flock until they all pass away on their own.The test came back positive, which is sadly what I thought. I’m pretty bummed, I was really hoping it would be something else. Now I just have to figure out what to do. I’ve got the 7 infected ones separated, and I am treating my rooster with antibiotics. I’m wondering if Coryza always causes a hen to be a poor layer. Part of me wants to keep my roo and just move on since I don’t sell my chicks or chickens, but if this sickness is going to cause me a bunch of harm and hassle In the future (and a permanent drop in egg production) then I’d rather just cull the infected ones. It also stinks because I’m not sure which ones might have it in my “healthy coop” still. None are showing any symptoms of obvious respiratory distress, but there is a huge drop in egg production. I’m getting only one egg a day out of 8 young Dominiques. I suppose this could also be a result of them molting. Any further advice would be much appreciated.