I have previously posted regarding a new rooster to my flock who is in quarantine. https://www.backyardchickens.com/t/726418/new-pic-5-month-old-roo-with-bump-on-beak-and-now-yellowish-white-spot-roof-of-mouth-what-is-this-should-i-be-concerned-pictures/10#post_10036980 After 10 days a bump appeared and I suspect it is Canker and I just began treatment with Metronidazole and betadine 3 days ago. I am coming up on 4 weeks quarantine and I understand that they are carriers after successful treatment. What does this mean for my flock if I decide to integrate him?. He is very cool, and I have grown very attached to him, but I don``t want to put anyone at risk. The seller says she will take him back if I am worried. What should I do???