Chickenpox is an acute viral infection caused by the varicella zoster virus infection, which occurs in winter and spring, and children are prone to chickenpox for the following reasons: 1. 2, chickenpox is very contagious, the infection is widespread, can be transmitted by contact and respiratory transmission, if children are not vaccinated against chickenpox, contact with children with chickenpox may be infected with the disease. The first two days of the rash and one week after the rash are contagious, and the susceptible population is preschoolers, and there is a possibility of infection when they come into contact with patients in the incubation period. If you have been in contact with a child with chickenpox, you should be careful within 3 weeks to see if you are infected. If you have been in contact with a child with chicken pox, you should be careful to watch for infection within 3 weeks. If your body temperature is too high, you can give physical cooling, and if the fever does not go down, seek medical attention.