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Chickenpox and shingles are caused by the same virus, varicella-zoster virus (VZV). Chickenpox is the illness caused by a first infection; after recovery, VZV can remain dormant in the body and reactivate years later as shingles. Vaccination changes the odds: chickenpox vaccination prevents most chickenpox and makes later shingles much less common than after natural infection, while Shingrix is recommended in the United States to prevent shingles in eligible adults.
How are chickenpox and shingles connected?
Chickenpox is the illness that follows a first VZV infection. After the illness resolves, the virus can remain inactive in the body and reactivate years or decades later. That reactivation causes herpes zoster, commonly called shingles, which often appears as a painful rash. Shingles risk rises with age, and weakened immune systems also increase risk. CDC explains that VZV remains dormant after chickenpox; its shingles overview describes the illness and risk factors.
In the United States, CDC estimates that about 1 in 3 people will have shingles during their lifetime. That is a population estimate, not a prediction for any one person. CDC, August 19, 2025.
Can you get shingles from someone who has it?
No. A person exposed to shingles does not catch shingles from that person. Someone without immunity to VZV can acquire the virus from an infected person and develop chickenpox. CDC describes transmission through direct contact with fluid from shingles blisters and virus particles from the blisters. CDC’s chickenpox overview explains the connection and spread.
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What does chickenpox vaccination change?
Varicella vaccination prevents most chickenpox and nearly all severe cases, according to CDC. Vaccinated people who do get chickenpox usually have a milder illness. The vaccine also changes the likelihood of shingles later: shingles can still occur after vaccination, but CDC says it is much less common than after natural chickenpox. CDC’s chickenpox vaccination guidance and its Varicella Vaccine Information Statement, current edition January 31, 2025 provide these details.
U.S. varicella vaccine schedule
- Children are routinely recommended to receive two doses, at 12–15 months and 4–6 years.
- People aged 13 years and older who have never had chickenpox or received varicella vaccine should receive two doses at least 28 days apart.
These are U.S. CDC recommendations; local schedules may differ. Varicella vaccine is not appropriate for everyone. CDC says people with serious immune system problems should not receive it, and pregnancy and some immune-affecting conditions or treatments require avoidance or clinical assessment. Review CDC precautions and discuss individual circumstances with a healthcare professional.
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How is the shingles vaccine different?
Varicella vaccine is intended to prevent chickenpox. Shingrix, the recombinant zoster vaccine, is intended to prevent shingles and complications such as postherpetic neuralgia (PHN), persistent nerve pain after the rash. For U.S. guidance, CDC recommends two Shingrix doses for adults aged 50 years and older, and for adults aged 19 years and older who are or will be immunodeficient or immunosuppressed. CDC’s Shingles Vaccination page summarizes the recommendation.
| Vaccine | Main purpose | U.S. groups and schedule summarized by CDC |
|---|---|---|
| Varicella vaccine (Varivax or MMRV/ProQuad) | Prevent chickenpox and severe disease | Two routine childhood doses at 12–15 months and 4–6 years; susceptible people aged 13 years and older receive two doses at least 28 days apart. CDC |
| Recombinant zoster vaccine (Shingrix/RZV) | Prevent shingles and related complications, including PHN | Two doses for adults aged 50 years and older and adults aged 19 years and older who are or will be immunodeficient or immunosuppressed; usually 2–6 months apart. CDC and CDC professional recommendations |
Having received chickenpox vaccine does not remove the need for Shingrix when an adult is eligible. CDC also recommends Shingrix for eligible adults who previously had shingles or received the older Zostavax vaccine. There is no specified waiting interval after shingles, but the rash should have gone away before Shingrix is given. CDC’s vaccine recommendations.
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Shingrix dose timing
For most people, the two doses are 2–6 months apart. In some immunocompromised circumstances, the second dose may be given after 1–2 months. A clinician can advise on the appropriate timing based on immune status and individual circumstances. CDC guidance.
How well does Shingrix work?
CDC reports effectiveness above 90% against shingles and PHN in relevant healthy adult age groups, but effectiveness is not a guarantee that an individual will avoid illness. Its 2025 figures include:
- Against shingles: 97% effectiveness among healthy adults aged 50–69 and 91% among healthy adults aged 70 and older.
- Against PHN: 91% effectiveness among adults aged 50 and older and 89% among adults aged 70 and older.
- Against shingles in adults with weakened immune systems: 68%–91%, depending on the condition.
These are CDC estimates for the populations and outcomes stated, not personal predictions. CDC reports that immunity remained high for at least seven years in adults aged 70 and older with healthy immune systems. CDC, August 19, 2025.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.When should someone not receive Shingrix?
CDC says not to receive Shingrix during pregnancy or while currently experiencing shingles. A prior severe allergic reaction to a vaccine component or dose is also a reason not to receive it. If someone has a moderate or severe illness, CDC advises waiting until recovery. These are Shingrix-specific precautions; varicella vaccine has different restrictions. Discuss personal contraindications, immune status and timing with a healthcare professional. CDC Shingles Vaccination; CDC Chickenpox Vaccination.
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Which guidance applies where you live?
The schedules and eligibility described here are U.S. CDC recommendations. Vaccine schedules and eligibility can differ elsewhere, so readers outside the United States should check their local public health authority and clinician.
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