A disease caused by the varicella zoster virus
It is caused by the varicella zoster virus and spreads easily via respiratory droplets and skin blisters. Children who are otherwise healthy usually recover from chickenpox in approximately one week. For adults, pregnant women and immunosuppressed people, the disease can be serious.
The chickenpox vaccine was added to the National Immunisation Programme on 1 September 2017. It is offered free of charge to all children between the ages of 1.5–11 years who have not yet had chickenpox.
The vaccine has been found safe in extensive use.
The virus can lie dormant in the ganglia, only to activate and cause the shingles rash years later when the individual’s immunity is suppressed due to age or some other reason.
Report by the National Public Health Institute of Finland’s children’s chickenpox vaccine working group (National Public Health Institute of Finland publications B 40/2008)