You need the shingles vaccine once, unless specific circumstances apply

The standard shingles vaccine schedule is a single dose. Once you receive Shingrix (the current recommended vaccine), you are considered protected for the long term. You do not need boosters on a regular schedule the way you might for tetanus or flu shots.

However, your situation may differ if you received an older vaccine called Zostavax before 2018, or if your immune system is severely weakened. The timing and number of doses depends on which vaccine you received and when.

Key Takeaways

  • Shingrix, the vaccine given now, requires two doses given 2 to 6 months apart, then you are done.
  • If you received Zostavax (the older vaccine) before 2018, you should get Shingrix at least one year later.
  • People with severely weakened immune systems may need different timing or additional doses, which your doctor will determine.
  • Protection from Shingrix remains strong for at least 7 years and likely much longer, with no booster currently recommended.

The two-dose schedule for Shingrix

Shingrix is given as two separate injections. The first dose and second dose are spaced 2 to 6 months apart. Both doses are necessary for full protection. If you miss the second dose, you can receive it whenever you are ready—there is no need to restart the series.

The two-dose approach is more effective than the older single-dose Zostavax. Studies show Shingrix prevents shingles in about 90 percent of vaccinated people, compared to roughly 50 percent protection from Zostavax.

What to do if you received Zostavax

Zostavax was the standard shingles vaccine until 2018. If you received it, you should get Shingrix at least one year after your Zostavax dose. This applies regardless of how long ago you received Zostavax—even if it was 10 or 20 years ago.

The reason for the one-year wait is to avoid potential interference between the two vaccines. After that year has passed, your doctor can give you the two-dose Shingrix series on the standard 2 to 6 month schedule.

Timing for people with weakened immune systems

If your immune system is severely weakened—from HIV, cancer treatment, organ transplant, or immunosuppressive medications—the vaccine schedule may be different. Your doctor may recommend a longer interval between the two Shingrix doses, or may advise waiting until your immune function improves.

People with HIV can receive Shingrix once their CD4 count is above 200 cells per microliter. Those undergoing chemotherapy should wait until treatment is complete. Transplant recipients typically wait several months after the procedure. Your doctor will determine the safest timing for your specific situation.

How long protection lasts

Studies have tracked people who received Shingrix and found that protection remains strong for at least 7 years after the second dose. The data does not yet show whether protection weakens after that point, because the vaccine has not been in use long enough to measure 10 or 15-year outcomes.

Based on what we know now, the CDC and other health agencies do not recommend booster doses on any regular schedule. If research eventually shows that protection does decline significantly after many years, recommendations may change—but that decision would be made based on future data, not current practice.

Age and timing for first vaccination

Shingrix is recommended for all adults age 50 and older, regardless of whether they remember having chickenpox or shingles. It is also recommended for adults age 19 and older who have weakened immune systems.

There is no upper age limit. People in their 70s, 80s, or older can and should receive the vaccine if they have not already. The vaccine is effective across all age groups, though protection may be slightly lower in people over 80.

What happens if you delay the second dose

If you receive the first dose of Shingrix but do not get the second dose right away, you do not need to restart. You can receive the second dose whenever you are ready, even if months or years have passed. The two doses do not need to be exactly 2 to 6 months apart—that is simply the recommended interval.

However, you are not fully protected until you complete both doses. If you had the first dose and then get shingles before receiving the second dose, you should still get the second dose once you have recovered from the acute illness, usually after 2 to 4 weeks.

Frequently Asked Questions

Do I need a booster shot after Shingrix?

No booster is currently recommended. Protection from Shingrix lasts at least 7 years based on available data. If future research shows protection weakens significantly after many years, the CDC may update recommendations, but that has not happened yet.

Can I get Shingrix if I have never had chickenpox?

Yes. You can receive Shingrix even if you do not remember having chickenpox or have no record of it. Most people over 50 have been exposed to the chickenpox virus at some point, even if they did not develop symptoms. Your doctor can test for immunity if there is genuine doubt.

What if I got shingles after my first Shingrix dose but before the second?

You should still receive the second dose once you have recovered from the acute shingles illness, usually 2 to 4 weeks after the rash appears. The second dose will still provide benefit and help prevent future episodes.

How long after Zostavax should I wait before getting Shingrix?

Wait at least one year after your Zostavax dose before starting Shingrix. After that year, you can receive the standard two-dose Shingrix series on the 2 to 6 month schedule.

Can I get other vaccines at the same time as Shingrix?

Yes. Shingrix can be given at the same visit as other vaccines, including flu, pneumococcal, and COVID-19 vaccines. They should be injected in different arms. There is no need to space them apart.