Chickenpox is a highly contagious exanthematous disease caused by varicella-zoster virus infection. Its clinical characteristics include the successive or simultaneous appearance of papules, vesicles, and crusts on the skin and mucous membranes. Both chickenpox and herpes zoster patients are sources of infection, primarily from those with chickenpox. From one to two days before the onset of the disease until crusting, it is highly contagious, mainly transmitted through airborne droplets and the respiratory tract, or by contact with vesicular fluid. The general population is susceptible, especially pregnant women and people with low immunity, making it possible to transmit to adults.