When my son was in nursery school, we showed up at the door one day to a huge sign that said there was an outbreak of chicken pox and to leave your child at your own peril! I could almost feel the fear in the air as it was so palpable! I decided that instead of being fearful, I was going to use Christian Science to deal with this matter and apply the spiritual laws of health that I was learning to this situation. So, while physically I did leave my son there, I did not leave him, or the staff, or the other children in the nursery, mentally.
In Christian Science, attending to the mental atmosphere and condition of a problem is not only paramount, it's the environment in which the healing work is conducted.
As I walked out of there, my thought was fixed on knowing that spiritual law and understanding is supreme over material law and belief, and that no material condition had any sovereignty over the health of my child or any of God's children.
I recalled a passage from the Christian Science textbook, Science and Health With Key to the Scriptures by Mary Baker Eddy: "Evil thoughts, lusts, and malicious purposes cannot go forth, like wandering pollen, from one human mind to another, finding unsuspected lodgment, if virtue and truth build a strong defence." I felt it was my duty to stand guard at the door of thought as a soldier would a fort and that my line of defense was virtue and truth as instructed by the foregoing passage.
I considered chicken pox an evil thought with a malicious purpose to make sick the innocent, and I was determined that defending against the thought of it wandering into my thought, or anyone else's, would protect our dear children from being preyed upon by a viral thought of sickness.
I got into my car and listened to an audio version of The Christian Science Bible Lesson on the way to work. Specifically, I applied the virtuous and true ideas I was hearing from the lesson to the threat of contagion in thought and turning to ideas that guarded the preservation of health and the innocence of God's children from illness.
When I got to work, I was able to search the word "contagion" in a Concordance of The Bible and all Mary Baker Eddy's writings in order to be very clear that chicken pox had no power. When I felt at peace mentally that all was well, I focused on the work of my employment for the rest of the day.
That evening when I picked my child up from the nursery, there was "no sign" of contagion of chicken pox either on the door, or in the minds of the workers and parents; no one uttered a word about it. It was if it never happened! And, of course, my son never had a sign of chicken pox then or ever since, and that was over 10 years ago!