I had a Coryza outbreak late last fall and processed out all birds. Since then I have vaccinated all current birds. Last vaccination was 10 days ago. Now I am having an outbreak again. Does anyone have any experience with this? Is it possibly FROM the vaccine? Just seems too coincidental that it is happening now. I have about 100 birds, mostly pullets(Golden Comet and araucana) about 6 weeks from laying. Thanks!