Most adults born in 1957 or later need at least one measles dose as an adult

Whether you need a booster depends on when you were born, what vaccines you received as a child, and whether you have proof of immunity. Adults born in 1957 or later are considered potentially vulnerable to measles because vaccine coverage was incomplete during their childhood years. The CDC recommends that most adults in this group receive at least one dose of MMR (measles, mumps, rubella) vaccine as an adult, even if they received doses as a child.

Adults born before 1957 are generally considered immune from natural infection during that era, when measles was common. However, some adults born after 1957 may already have sufficient immunity from childhood vaccination or from having had measles. A blood test can confirm whether you are immune, which means you would not need the vaccine.

The practical question is simpler than the rules: if you are unsure of your vaccination history, your doctor can order an immunity test or simply give you one dose of MMR. One dose as an adult is safe and effective, and getting it when you are uncertain is the standard approach.

Key Takeaways

  • Adults born in 1957 or later should have received two MMR doses total (as a child and as an adult, or two as a child), unless they have proof of immunity from a blood test.
  • If you do not have records of childhood vaccination, one dose of MMR as an adult is recommended and is safe to receive even if you were vaccinated as a child.
  • A blood test can show whether you are immune, which would mean you do not need the vaccine, but testing is optional—vaccination is the simpler route if records are missing.
  • Adults who work in healthcare, travel internationally, or live in areas with measles cases may be advised to confirm immunity through testing or vaccination.
  • MMR vaccine is a live vaccine, so it is not given to people with certain immune system conditions; your doctor will ask about your health history before vaccinating.

Who the CDC recommends get a booster

The CDC recommends one dose of MMR vaccine for adults born in 1957 or later who do not have documentation of two doses of measles-containing vaccine or other evidence of immunity. This includes people who received only one dose as a child, people whose vaccination records are unknown or missing, and people who were never vaccinated.

Two doses are recommended for adults who work in healthcare settings, attend college, travel internationally, or live in areas experiencing measles outbreaks. Healthcare workers in particular face higher exposure risk and need documented immunity. If you work in a hospital, clinic, or long-term care facility, your employer may require proof of two doses or immunity testing before you start work.

Adults who received the older killed-virus measles vaccine (used in the 1960s) should receive one dose of MMR, because that vaccine is no longer considered reliable. If you received a single dose of MMR as a child and have no record of a second dose, one additional dose as an adult is recommended.

How to learn about you are already immune

The most direct way to know your immunity status is a blood test called a measles serology or titer test. This test measures antibodies to measles in your blood and tells you whether you are immune. Your primary care doctor can order this test, and results usually come back within a few days. Some urgent care clinics and travel medicine clinics also offer it.

The test costs vary depending on your insurance and the clinic. If you have insurance, the test may be covered with no out-of-pocket cost, or you may pay a copay. Without insurance, the cost is typically $50 to $150. Some public health departments offer free or low-cost testing, particularly if you are planning to travel or work in healthcare.

If you do not have records of your childhood vaccinations and testing is not practical or affordable, getting one dose of MMR as an adult is safe and is the standard recommendation. You do not need to test first; vaccination is the simpler path for most people.

Where to get the vaccine as an adult

Your primary care doctor is the most straightforward place to get MMR vaccine. Call your doctor's office and tell them you need measles vaccination; they can schedule you for a regular visit or sometimes a quick vaccine-only appointment. Bring any vaccination records you have, even if they are incomplete.

Pharmacies including CVS, Walgreens, and Rite Aid offer MMR vaccine at their in-store clinics in most states. You can often schedule online or walk in. Pharmacists can give the vaccine without a doctor's order in most states, though some states require a standing order from a healthcare provider. Call ahead to confirm the vaccine is in stock.

Community health centers and federally may have access to health centers (FQHCs) offer vaccination, often on a sliding fee scale based on income. Find a center near you through the HRSA Find a Health Center tool. Public health departments sometimes offer vaccination clinics; call your local health department to ask about schedules and costs.

Cost and insurance coverage

MMR vaccine is covered by most health insurance plans with no copay under the preventive care benefit. Medicare Part B covers it for beneficiaries at risk. Medicaid covers it in all states. If you have insurance, call your plan or ask at your doctor's office whether there is a copay.

Without insurance, the vaccine itself costs $40 to $80 at most pharmacies and clinics. If you receive it at a doctor's office, there may be an additional office visit fee. Community health centers often charge on a sliding scale or for free based on income. Some pharmacies offer discounts or coupons; ask when you call to schedule.

If cost is a barrier, your local health department may have free or low-cost vaccination clinics. Call and ask whether they have measles vaccination available and what the cost is for uninsured people.

Side effects and who should not get the vaccine

MMR vaccine side effects are usually mild. Common reactions include soreness at the injection site, low fever, and mild rash one to two weeks after vaccination. Serious side effects are rare. Allergic reactions happen in fewer than one per million doses.

MMR is a live vaccine, meaning it contains a weakened form of the virus. It is not given to people with severely weakened immune systems, including people with untreated HIV, people receiving chemotherapy, or people taking high-dose steroids. If you have a condition affecting your immune system, tell your doctor before vaccination; they may recommend testing for immunity instead, or waiting until your immune system is stronger.

Pregnant people should not receive MMR vaccine, because it is a live vaccine. If you are planning pregnancy, vaccination before conception is recommended. People with a history of severe allergic reaction to gelatin or the antibiotic neomycin should not receive MMR; tell your doctor about any severe allergies.

What to do if you cannot find your vaccination records

Missing records do not mean you were not vaccinated. Many people have no documentation of childhood vaccines but were vaccinated anyway. The standard recommendation is to get one dose of MMR as an adult; it is safe to receive even if you were vaccinated as a child, and it ensures you are protected.

If you want to avoid unnecessary vaccination, you can have immunity testing done first. A blood test will tell you whether you are immune, and if you are, you do not need the vaccine. However, testing costs money and takes time, so many people simply get vaccinated rather than test.

Some employers, schools, or healthcare facilities require proof of vaccination or immunity before you can work or attend. If you need documentation, ask your doctor to provide a record of the dose you receive as an adult. That becomes your proof going forward.

Frequently Asked Questions

Can I get MMR vaccine if I already had measles as a child?

Yes, it is safe. If you had measles naturally, you are immune for life, but a blood test is the only way to confirm this. If you want documentation of immunity without testing, one dose of MMR vaccine is safe and will not cause problems. Many people choose vaccination over testing for simplicity.

How long does immunity from the vaccine last?

Immunity from MMR vaccine is considered lifelong for most people who receive two doses. One dose provides strong protection but is slightly less reliable than two doses. Booster doses are not routinely recommended for adults unless you are in a high-risk setting like healthcare or during an outbreak.

What if I am allergic to eggs?

MMR vaccine can be given safely to people with egg allergies. The vaccine is grown in chicken cells but does not contain significant egg protein. Tell your doctor about the allergy before vaccination so they can monitor you for a few minutes afterward, but egg allergy is not a reason to avoid the vaccine.

Do I need a booster if I got MMR as a child?

If you received two doses of MMR as a child, you do not need a booster unless you work in healthcare or are in an outbreak setting. If you received only one dose as a child, one additional dose as an adult is recommended. If you are unsure how many doses you received, one dose as an adult is the safe choice.

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

Yes, MMR can be given at the same visit as other vaccines, including COVID-19, flu, and Tdap. They can be given in different arms. If you are receiving other live vaccines like varicella (chickenpox), they should be given on the same day or at least 28 days apart; ask your doctor about timing if you need multiple vaccines.