Skip to Content
Home > Health Information > Health Library > Tetanus
Tetanus (lockjaw) is a preventable but dangerous bacterial infection that causes muscle spasms, trouble opening the mouth (lockjaw), trouble swallowing, and seizures. Usually found in dirt and soil, tetanus bacteria typically enter the body through a wound or cut.
Tetanus bacteria thrive only in the absence of oxygen. The deeper and narrower the wound, the less oxygen is around it, and the greater the possibility of tetanus. For example, tetanus bacteria can thrive in a puncture wound from a dirty nail.
Following the recommended immunization schedule helps prevent tetanus. Before age 6, children receive a series of tetanus shots (DTaP). Then, teens and adults get regular tetanus booster shots.
A person who has a dirty cut or wound should get a tetanus shot as soon as possible if at least 5 years have passed since his or her last tetanus immunization.
Current as of: August 22, 2019
Author: Healthwise Staff
Medical Review:Adam Husney, MD - Family Medicine & John Pope, MD, MPH - Pediatrics & Kathleen Romito, MD - Family Medicine & Christine Hahn, MD - Infectious Disease, Epidemiology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2020 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
See important information from Billings Clinic on Non-discrimination and Interpreter Services.
Billings Clinic is proud to be an equal opportunity/affirmative action (EOE/AA) e-verify employer.