My main flock has just come down with fowl pox, and I have 22 4-week-old chicks in a closed off area a ways away, but within sight. I have an adult frizzle that lives with the chicks, and a few days ago I took her out to free range with my main flock. This was before the disease had shown up, and the only ones she had contact with were two roosters who mated with her, neither of which had symptoms at the time and one of which is beginning to show symptoms today. She didn't go into their coop or come into contact with anything but the two roosters, but I am wondering if she was contaminated and if it is okay for me to vaccinate the isolated chicks. Neither she nor the chicks are showing any symptoms.