Oh Cluck! Our Pullet's Got Coryza—Seeking Advice from Fellow Flock Keepers

Ant Coryza positive flock owners have advice for me? One of our home grown pullets went to the vet today and she’s got Coryza. We always said we would never do a vet for a dang chicken but I’m so glad we did. They took a culture sample and will let me know what treatment for her within a week. What has your experience been and how many flares do you usually experience after this? For the one who did get infected and for the rest of your flock who are now known carriers?