Ventilation, not touching the blister fluid of a chickenpox patient, and getting vaccinated against chickenpox can try to prevent chickenpox from spreading to family members. Chickenpox is a highly contagious disease that can be transmitted through the respiratory tract, direct contact, and is also contagious during the incubation period. Surrounding people can prevent the infection by receiving chickenpox vaccination, and the symptoms of chickenpox infection can also be reduced after receiving chickenpox vaccination. Because chickenpox spreads through the respiratory tract, it is recommended to keep the room ventilated, and windows need to be opened every hour to keep the indoor air circulating and reduce the amount of virus in the indoor air. The blister fluid of chickenpox patients also contains a large amount of virus, and direct contact with the blister fluid may also be contagious. Therefore, when taking care of chickenpox patients, it is recommended to wear gloves and masks as much as possible to avoid contagion.