I think I made a big mistake, and introduced an americana to our barred rock flock without quarantine. Straight from one chicken house to ours. She stayed in there maybe 10 minutes, the others pecked her a little. My wife came back to the house to do the research we should have done before hand, and we immediately removed her, and will be taking her back tonight. What is the likelihood of contamination, and is there anything I should do for my barred rocks? I am terrified I may have harmed my chickens. Anyone out there with words of comfort/ information?