Overview
Chickenpox (also called varicella) is caused by the varicella-zoster virus (VZV). It’s a very contagious virus that causes an itchy and blistery rash that lasts around 4–7 days. The vaccine that protects against chickenpox is the varicella vaccine.
Most people who are vaccinated with 2 doses of chickenpox vaccine will be protected for life. Chickenpox is a mild disease for many children but not for all children, and there’s no way to know who will have a serious case. With vaccination, children get immunity from chickenpox without the risk of serious complications caused by the disease itself.
See below for a simple overview of who should receive the chickenpox vaccine.
Childhood Recommendations
Children under age 13 should receive two doses of chickenpox vaccine, recommended at 12–15 months old (1st dose) and 4–6 months old (2nd dose).
People age 13 and older who haven’t had chickenpox or the chickenpox vaccine should get two doses. These two doses should be given at least 28 days apart.
If someone has only had one dose of chickenpox vaccine in the past, they should get a second dose as soon as possible.
Adult recommendations
Adults who are not already immune to chickenpox should receive two doses of the varicella vaccine. Adults who have had chickenpox in the past are considered immune.
If someone has only had one dose of chickenpox vaccine in the past, they should get a second dose as soon as possible.
Immunization schedules
Childhood schedules:
Adult schedule:
Additional information about the chickenpox vaccine
Chickenpox (varicella) vaccine information statement
CDC’s Chickenpox main page