水痘，一年四季均可发生，而以冬春多发，６个月至３岁的婴儿发病率最高。水痘，是由水痘．带状 疱疹病毒引起的一种小儿急性呼吸道传染病。水痘的传染性很强，接触病儿的易感者９０％可发病。水痘病毒主要是通过病儿打喷嚏、咳嗽、说话时的飞沫来传播的，接触被病毒污染的尘土 Chickenpox, can occur throughout the year, but in winter and spring hair, 6 months to 3 years old, the highest incidence of infants. Chickenpox is made of chickenpox. A zoster virus caused by a childhood acute respiratory infection. Chickenpox contagious strong contact with sick children 90% of susceptible to disease. Chickenpox virus is mainly spread through the sick child sneezing, coughing, flying droplets when talking, contact with the virus contaminated dust