we got a rooster and he was introduced to the flock the first day we got him, not my choice i would have like to quarrentine him first, but the man just tossed him in my front yard. after about a week of him being here some of my hens started wheezing and sneezing. i gave them antibiotics, per the package. everybody got better, but laying diminished to maximum 2 eggs a day since August 3 when they got sick, from 17 used to be good laying hens that would give me 14-17 eggs per day. i was doing some chicken reading and the disease infectious bronchitis can cause infertility with hens and reproductive systems being destroyed. is it possible that they could have had infectious bronchitis and it ruined there reproductive systems? when the rooster came he showed no signs of illness and never did even when the hens were ill. i do love my chickens but i can not keep them if they do not "do their part", i wish i had alot of money but i do not. could infectious bronchitis cause a hen to become an internal layer too?can salpingitis have been caused by infectious bronchitis as well? could she have contracted it from the rooster? are they also always carriers of infectious bronchitis even if there are no signs of the disease? my daughter was also diagnosed with adenovirus 2 summers ago, i was reading that is a disease a chicken can get. could my daughter have contracted it from my hens? i would also like to be able to eat them when we kill them. if they ever had a disease and was treated are they still good to eat?