Tetanus

Tetanus is a serious infection caused by the bacterium Clostridium tetani. The bacteria produce a toxin that affects the nervous system, causing painful muscle stiffness and spasms. Tetanus is not contagious and does not spread from person to person.

Common symptoms

• Early signs: jaw stiffness (“lockjaw”), neck stiffness, difficulty swallowing, and abdominal muscle tightness
• As it progresses: painful, lasting muscle spasms triggered by noise, light, or touch; fever; sweating; fast heartbeat; trouble breathing
• Severe cases: broken bones from strong spasms and life-threatening complications like respiratory failure

How infection occurs
Tetanus spores live in soil, dust, and animal feces. They can enter the body through cuts or wounds, especially:

• Puncture wounds, burns, or crush injuries
• Animal bites
• Wounds contaminated with soil or foreign material
• Nonsterile needles

Spores thrive in low-oxygen environments, where they produce toxins that cause illness.

Risk factors

• Not being up-to-date on vaccinations (Td or Tdap boosters)
• Older age
• Diabetes
• Injection drug use
• Severe or dirty wounds
• Improper wound cleaning

Diagnosis
Tetanus is diagnosed based on symptoms and wound history. Lab tests and cultures are rarely helpful because illness is caused by the toxin, not the bacteria itself. Some tests may be used to monitor complications. Early treatment often begins before test results are confirmed.

Prognosis and prevention
With prompt, intensive medical care, many people recover, but tetanus can be fatal, especially in older or unvaccinated individuals. Prevention includes:

• Routine vaccination: DTaP for children, Tdap for adolescents and pregnant women, Td or Tdap boosters every 10 years for adults
• Proper wound cleaning and prompt care for contaminated wounds

What is tetanus?
An infection caused by Clostridium tetani bacteria that produces a toxin, leading to muscle stiffness and spasms. It does not spread between people.

How do people get tetanus?
Spores enter through skin breaks, such as puncture wounds, cuts, burns, or animal bites, often from soil, dust, or animal feces.

What are the first signs of tetanus?
Jaw stiffness, neck stiffness, trouble swallowing, and increasing muscle tightness. Muscle spasms and fever may follow.

How quickly do symptoms appear?
Usually 3–21 days after exposure, most often within 7–10 days. Deep or contaminated wounds may cause faster onset.

Is tetanus contagious?
No. Tetanus occurs when spores enter a wound and produce toxins inside the body.

How is tetanus treated?
Treatment requires urgent medical care, often in a hospital or ICU, and may include:

• Wound cleaning
• Human tetanus immune globulin to neutralize toxins
• Antibiotics such as metronidazole
• Medications to control muscle spasms
• Supportive care, including breathing support if needed
• Tetanus vaccination for long-term immunity

Can tetanus be prevented?
Yes. Vaccination is the most effective protection:

• DTaP series for children
• Tdap booster for adolescents
• Td or Tdap booster every 10 years for adults
• Tdap booster during every pregnancy
  Good wound care and prompt medical attention for contaminated wounds also reduce risk.

What should I do if I get a wound?
Clean thoroughly with soap and water. Seek medical care for deep, contaminated, or animal bite wounds. Check vaccination records. A booster or tetanus immune globulin may be needed if your last booster was over 10 years ago—or over 5 years ago for high-risk wounds.

Who is at highest risk for severe tetanus?
Unvaccinated individuals, older adults, those with severe or dirty wounds, people with diabetes, and injection drug users.

Is tetanus fatal?
Tetanus can be life-threatening, especially if respiratory muscles are affected. Early diagnosis and intensive care improve recovery chances. Vaccination and proper wound care are the best protection.

Seek immediate medical care if you notice jaw stiffness, muscle spasms, or have concerns about vaccination or a contaminated wound.