Chicken-pox
Chickenpox, also called varicella, contagious viral disease characterized by an eruption of vesicles (small blisters) on the skin. The disease usually occurs in epidemics, and the infected persons are generally between two and six years old, although they can be of any age. Chickenpox is caused by the varicella-zoster virus, the same virus that causes herpes zoster (also called zoster, shingles, or zona), a localized eruption of large blisters. Chickenpox is the clinical reaction to a first exposure to the virus[1].
Children disease Jane had in the childhood in “The Mission of Jane”.
The diseases Jane had caused no danger, which underlines a good health this character possesses. Jane was so calm and healthy child, that her father never had to help her mother with the child.