The vaccines worth staying current with as an adult are few, and the CDC's Adult Immunization Schedule names them plainly: a flu shot annually; a tetanus-diphtheria booster (Td) every 10 years, with Tdap doses during each pregnancy; shingles vaccination from age 50; RSV vaccination starting at 75; pneumococcal vaccination from age 50; COVID-19 vaccination per the current CDC schedule; and HPV catch-up through age 26. Which of these applies to you is determined almost entirely by age, pregnancy status, and health conditions — not by guesswork.
This article walks through the adult vaccines that most commonly get missed, the ages that trigger them, and the pregnancy-specific recommendations that exist for women. It publishes information, not medical advice — per the CDC, your own schedule depends on your history and conditions, so decisions belong with you and your clinician or pharmacist.
Why do adults need boosters at all?
Because immunity from some vaccines fades with time, and because adulthood delivers new risks that childhood vaccination never covered. Tetanus protection wanes measurably within a decade, which is the basis of the CDC's rule: a Td or Tdap booster every 10 years, whatever your age. Other adult vaccines — shingles and RSV among them — exist because the diseases they prevent become dangerous at ages the childhood schedule was never designed for. Adult immunization has measurable reach: per CDC data, a single RSV season of vaccination of older adults prevented tens of thousands of outpatient illnesses in the 2023–2024 season estimates.
What is Tdap, and why does pregnancy require one?
Tdap protects against tetanus, diphtheria, and pertussis — whooping cough, a respiratory infection that is dangerous and occasionally fatal in newborns too young to be vaccinated themselves. Per the CDC's schedule, every pregnancy should include a dose of Tdap between weeks 27 and 36, in each pregnancy regardless of spacing, because the point is not just the mother's protection: antibodies cross the placenta and shield the infant during the first months of life, before the baby's own vaccination series begins at 2 months. One dose of Tdap is also recommended for any adult who never received it, replacing one of the routine 10-year boosters.
Who needs the shingles vaccine, and when?
Shingles is a reactivation of the varicella-zoster virus — the virus that causes chickenpox — producing a painful blistering rash, and in some people a lasting nerve pain called postherpetic neuralgia. Per the CDC's recommendation, the shingles vaccine (RZV, given as Shingrix, two doses 2 to 6 months apart) is recommended for all adults 50 and older, including those who have had shingles before, those vaccinated against chickenpox, and those unsure of their history; it is also recommended from age 19 for people who are or will be immunocompromised. The vaccine is strongly effective — per the pivotal trials, two doses reduce shingles risk by around 90 percent in adults 50 to 69 — though protection declines modestly over subsequent years.
What is the RSV vaccine story?
Respiratory syncytial virus (RSV) causes thousands of hospitalizations each year among older adults, and vaccines for adults became available in 2023. Per CDC guidance updated in June 2024, a single RSV vaccine dose is recommended for all adults 75 and older, and for adults 60 to 74 who are at increased risk of severe RSV — due to conditions such as chronic heart or lung disease, diabetes, or obesity — through shared clinical decision-making with a clinician. It is a seasonal vaccine, typically offered in late summer and fall, and currently it is a one-time dose rather than an annual series, though the CDC has said guidance may evolve as duration data accumulate.
What about pneumococcal and other age-triggered vaccines?
In October 2024, the CDC's vaccine advisory committee (ACIP) lowered the recommended age for pneumococcal vaccination from 65 to 50, adding a vaccine that protects against pneumococcal pneumonia and bloodstream infection for adults in their 50s. Other adult vaccines depend on history: hepatitis B vaccination for all adults 19 to 59, per the CDC's recommendation adopted in 2022; MMR or varicella catch-up for adults without evidence of immunity, which matters especially for women planning pregnancy, since these live vaccines must be given before conception with a waiting period after. A preconception visit is the natural moment to check exactly that.
Related stories: Why Blood Pressure Matters for Women at Every Phase of Life · STI Screening: What the Guidelines Actually Recommend for Women, and When.
Where does COVID-19 fit now?
COVID-19 vaccination remains part of the CDC adult schedule, with recommended timing updated periodically as the virus evolves; per the CDC's guidance through this period, older adults — particularly those 65 and up — are the group for whom up-to-date vaccination has the clearest documented benefit against severe disease, and updated formulations have been released seasonally since 2023. Because the details of intervals and formulations change, this is the one vaccine where checking the current CDC schedule or asking a pharmacist is more reliable than any article, including this one.
Do flu shots matter as much as people say?
The CDC recommends annual influenza vaccination for everyone 6 months and older who does not have a specific contraindication, and the case for adults rests on prevention of complication, not just inconvenience: per CDC estimates, flu has caused between roughly 9 and 41 million US illnesses in a single season in recent years, with tens of thousands of deaths in harder seasons, concentrated in older adults, pregnant women, and people with chronic conditions. Pregnancy adds a second reason — flu vaccination during pregnancy protects the newborn for the first months of life, the same antibody-transfer logic as Tdap.
When to talk to a clinician or pharmacist
Ask for a schedule review at any routine visit, or simply at a pharmacy — pharmacists administer most adult vaccines and can check your record. Prioritize the conversation if you are pregnant and unsure about Tdap or flu; if you turn 50 this year and have not discussed shingles vaccination; if you turn 50 or 75 and have not discussed pneumococcal or RSV vaccination; if you have a condition or medication that suppresses immunity; or if you plan pregnancy and cannot confirm your MMR and varicella immunity. A record gap is a reason to ask, not a reason to restart everything — most histories can be reconstructed with a blood test or documentation.
Frequently asked questions
I got shingles already. Do I still need the vaccine?
Yes, per the CDC: shingles can recur, and the RZV vaccine is recommended for adults 50 and older regardless of prior shingles. The usual practice is to wait until the acute outbreak has resolved before vaccinating. Two doses given 2 to 6 months apart provide strong protection against another episode and especially against postherpetic neuralgia, the most feared complication.
Can I get several vaccines at one visit?
Generally yes — per CDC guidance, most adult vaccines, including flu, COVID-19, RSV, and pneumococcal, can be co-administered at separate sites. Some clinicians prefer to space shingles vaccine from other shots in people prone to stronger reactions, since RZV more often causes a day or two of fatigue and sore arm. Convenience usually wins; ask what the pharmacist recommends for your combination.
I do not know if I ever had a Tdap. Is that a problem?
Not a fixable one. Per the CDC, an adult without documented Tdap simply receives one dose now — it replaces that decade's booster — and continues with Td or Tdap every 10 years. There is no harm in extra doses, records going back decades are rarely complete, and every pharmacy can check state immunization registries, which in many states hold your adult record even if your childhood paper card is long gone.
Which vaccines are needed before pregnancy?
Before conception, the check is MMR and varicella immunity, since both diseases can harm a pregnancy and those vaccines are live — they are given beforehand, with conception deferred for a month after per CDC guidance. During pregnancy, the schedule adds flu (any trimester, in season) and Tdap (27 to 36 weeks, each pregnancy). RSV vaccination of the mother is no longer the strategy for protecting newborns — per CDC guidance since 2024, protection comes from an infant antibody injection — so the pregnancy list is shorter than it briefly was.