― Chicken Pox- Symptoms Chicken pox is a disease that affects mainly children. It is contagious and can be spread even through air. The main way of chicken pox transmission is by direct contact with the person infected by chicken pox. Like many other disease, chicken pox also has symptoms. These signs will appear about three weeks after infection with the virus that causes chicken pox. The reason for this is because the chicken pox virus has an incubation period. The proper medical term.... Click [...].