Between 2009 and 2023, at least 47 Americans died of tetanus, a bacterial infection that has been preventable with a widely available vaccine since the 1940s. A CDC surveillance summary published in the Morbidity and Mortality Weekly Report documents 264 reported cases over that 15-year span, with a case-fatality rate that underscores a blunt reality: people are still dying from a disease that a simple booster shot can prevent.
Nearly all of the fatal cases shared a common thread. The patients were either unvaccinated, incompletely vaccinated, or long overdue for a booster dose. Adults over 65 accounted for a disproportionate share of deaths, a pattern consistent with waning immunity and gaps in childhood vaccination schedules that were less standardized decades ago. The findings raise uncomfortable questions about why, in a country that vaccinates millions of children each year against tetanus, a small but stubborn death toll persists.
A dramatic decline, then a plateau
The long arc of tetanus in the United States is, by most measures, a public health success story. In the 1940s, roughly 500 to 600 Americans died from the disease each year, according to historical CDC surveillance data. The introduction of tetanus toxoid vaccines into childhood immunization schedules, first as standalone shots and later as components of combination vaccines like DTaP and Tdap, drove cases down by more than 99 percent over the following decades.
But the decline has a floor. Since the early 2000s, the United States has reported roughly 15 to 25 tetanus cases per year, and a handful of those patients die. The new MMWR report confirms that this baseline held steady through 2023, with no meaningful downward trend in the most recent years. The disease has not been eliminated. It has been reduced to a level where each remaining case represents a specific failure: a missed vaccination, a skipped booster, a wound that did not receive proper follow-up care.
Who is still at risk
Tetanus is caused by Clostridium tetani, a spore-forming bacterium found in soil, dust, and animal feces. The spores enter the body through breaks in the skin, and the toxin they produce attacks the nervous system, causing painful muscle spasms, lockjaw, and, in severe cases, respiratory failure. Unlike diseases that spread person to person, tetanus cannot be controlled through herd immunity. Each individual’s protection depends entirely on their own vaccination history.
That makes booster compliance critical. The CDC recommends a Td or Tdap booster every 10 years for adults, yet national coverage data from the agency’s AdultVaxView surveys consistently show that a significant portion of U.S. adults are not up to date. Among adults 65 and older, the group most likely to die from tetanus, booster coverage has historically lagged behind younger age groups. Some older adults may never have completed a primary vaccination series in childhood, leaving them with little or no baseline immunity.
The CDC report also highlights that many tetanus patients had identifiable wounds, cuts, punctures, or abrasions, that should have triggered post-exposure prophylaxis in a clinical setting. An earlier analysis by the CDC and the California Department of Public Health, covering cases from 2008 through 2014, documented specific instances where patients with tetanus-prone injuries were discharged from emergency departments without receiving a recommended booster or tetanus immune globulin (TIG). Whether those lapses are widespread nationally remains unclear, but the pattern points to a second vulnerability beyond vaccination gaps: breakdowns in wound care at the point of treatment.
Why the numbers are hard to pin down
Tetanus is diagnosed clinically, not through a standard lab test. A physician recognizes the characteristic symptoms, reviews the patient’s wound and vaccination history, and reports the case to state health authorities, who then notify the CDC through the National Notifiable Diseases Surveillance System. The CDC’s surveillance manual for vaccine-preventable diseases lays out the reporting criteria, but because the process depends on clinical recognition and voluntary jurisdiction-level reporting, the true number of infections may be higher than official counts suggest.
Death certificate data from the CDC WONDER mortality portal offer a separate check. Researchers can query tetanus-coded deaths (ICD-10 code A35) by year, age, and geography, providing an independent count that does not rely on the surveillance pipeline. When the two data streams align, confidence in the numbers grows. When they diverge, it may signal underreporting or misclassification in one system or the other. For a disease with very small absolute numbers, even minor shifts in coding practices or population estimates can distort trends.
The MMWR report also aggregates demographic data at a summary level, which limits the ability to examine whether tetanus deaths fall disproportionately on specific racial, ethnic, or socioeconomic groups. Given that vaccination coverage and access to emergency care vary sharply by income and geography in the United States, the absence of granular breakdowns leaves an important question unanswered.
What a preventable death actually requires
CDC clinical guidance spells out a straightforward decision framework for wound management. For clean, minor wounds in a person who has completed their primary vaccination series and received a booster within the past 10 years, no additional treatment is needed. For deeper, contaminated, or puncture wounds, or for patients whose vaccination history is unknown or incomplete, the protocol calls for a tetanus toxoid-containing vaccine and, in some cases, TIG to provide immediate passive immunity while the vaccine takes effect.
The algorithm is simple on paper. In practice, it requires that patients seek care after an injury, that clinicians ask about vaccination history, and that the recommended products are administered before discharge. Each step is a potential point of failure. Patients may not think a wound is serious enough to warrant a visit. Clinicians in busy emergency departments may overlook prophylaxis for injuries that do not appear life-threatening. And some patients, particularly those without insurance or in rural areas with limited urgent care access, may never present for treatment at all.
The 2009 to 2023 data make clear that these failures, while rare, are not theoretical. Every tetanus death in the dataset represents a chain of missed opportunities: a lapsed booster, an untreated wound, a clinical encounter that did not follow established protocols, or some combination of all three. The vaccine works. The challenge is making sure it reaches the people who need it, on time, every time.
For anyone who works outdoors, manages chronic wounds, or cannot remember their last tetanus shot, the most practical step is also the simplest: check with a doctor or pharmacist about booster status. Adults over 65 should treat this as especially urgent. A single visit can close the gap between being protected and being vulnerable to a disease that, as of April 2026, the United States still has not fully defeated.
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*This article was researched with the help of AI, with human editors creating the final content.
