I lurked and researched on this site for a long time but now I need some help/advice. Over the summer I got a chicken from a friend who did not know that their birds were sick. I did the unthinkable and did not separate the bird from my own - long story short I had an outbreak of Coryza run through my flock. I did have the birds tested by the State Vet so that I would know what I was dealing with. I culled 50 of my birds yesterday and now have only 7 (4 of which I do not mind culling if need be). I am planning on restarting my flock in mid Feb. and would like to know from those of you that have delt with this if you culled your ENTIRE flock? What did you do to prepare for new birds? Did you vaccinate? If so, where did you find the vaccine? Can ducks and guinea carry the disease? Any help would be greatly appreciated as I want to get the replacements off to a good healty start.