Whether chickenpox can be transmitted to an adult depends on whether the adult has been vaccinated against chickenpox or has a history of chickenpox. If an adult has a history of chickenpox vaccination or chickenpox disease, he or she is generally immune to the virus and is less likely to be infected with the chickenpox virus. If an adult is not immune to chickenpox and has direct contact with a person who has chickenpox or is in the range of droplet transmission, he or she may be infected with the chickenpox virus. Chickenpox is a contagious disease caused by varicella zoster virus infection, mainly through droplets, direct contact and other means of transmission, although most common in children, but adults who do not have varicella immunity, if the chickenpox virus carriers and direct contact, or in the same space, there are respiratory infections may be infected with the chickenpox virus, there is a chance of contracting chickenpox virus. Therefore, adults who do not have a history of chickenpox or have been vaccinated against chickenpox should try not to come into contact with people suffering from chickenpox, and if they are accidentally infected with chickenpox virus, they should go to the hospital as soon as possible for targeted treatment.