What Are Diphtheria, Tetanus, and Pertussis? The diphtheria, tetanus, and pertussis (DTaP) vaccine protects against: Diphtheria: a serious infection of the throat that can block the airway and cause severe breathing problems Tetanus (lockjaw): a nerve disease that can happen at any age, caused by toxin-producing bacteria contaminating a wound Pertussis (whooping cough): a respiratory illness with cold-like symptoms that lead to severe coughing (the "whooping" sound happens when a child breathes in deeply after a severe coughing fit). Serious complications can affect children under 1 year old, and those younger than 6 months old are especially at risk. Teens and adults with a lasting cough might have pertussis and not realize it, and could pass it to vulnerable infants. DTaP Immunization Schedule DTaP immunizations are given as a series of 5 injections, usually given at ages: 2 months 4 months 6 months 15–18 months 4–6 years A vaccine called Tdap (the booster shot) should be given at ages 11 to 12, and to older teens and adults who haven't yet had a booster with pertussis coverage. (This is especially important for adults who will be around newborn babies, such as grandparents or other caregivers.) Then, Td (tetanus and diphtheria) boosters are recommended every 10 years. Pregnant women should get the Tdap vaccine in the second half of each pregnancy, even if they've been vaccinated in the past. Tdap also can be given after a deep cut or severe burn to prevent tetanus infection. Why Is the DTaP Vaccine Recommended? Use of the DTaP vaccine has virtually eliminated diphtheria and tetanus in childhood and has greatly reduced the number of pertussis cases. Possible Risks of DTaP Immunization The vaccine can cause mild side effects: fever; mild crankiness; tiredness; loss of appetite; and tenderness, redness, or swelling in the area where the shot was given. Rarely, a child may have a seizure, a high fever, or uncontrollable crying after getting the vaccine. But these sorts of side effects are so rare that researchers question whether they're even caused by the vaccine. Most kids have a few minor or no side effects. When to Delay or Avoid DTaP Immunization Simple colds or other minor illnesses should not prevent immunization, but your doctor might choose to reschedule the vaccine if your child has a more serious illness. Talk to your doctor about whether getting the vaccine is a good idea if your child had any of the following after an earlier DTaP shot: a serious allergic reaction a brain or nervous-system problem, like coma or seizures Guillain-Barré syndrome severe pain or swelling of a whole arm or leg Your doctor might give a partial vaccine or no vaccine, or may decide that the benefits of vaccinating your child outweigh the potential risks. Caring for Your Child After DTaP Immunization Your child may have a fever, soreness, and some swelling and redness in the area where the shot was given. For pain and fever, check with your doctor to see if you can give either acetaminophen or ibuprofen, and to find out the right dose. A warm, damp cloth or a heating pad on the injection site may help reduce soreness, as can moving or using the arm. When Should I Call the Doctor? Call if you aren't sure whether the vaccine should be postponed or avoided. Children who have had certain problems with the DTaP vaccine usually can safely receive the Td (tetanus and diphtheria) vaccine. Call if anything concerns you after immunization. Back to Articles Related Articles Word! Vaccine A vaccine is another word for what most kids call a shot. Read More Diphtheria Diphtheria is a bacterial infection that's rare in the United States, where health officials immunize kids against it. But it's still common in developing countries where immunizations aren't given routinely. Read More Tetanus Tetanus (also called lockjaw) is a preventable disease that affects the muscles and nerves, usually due to a contaminated wound. Read More A Kid's Guide to Shots If you're old enough to read this, you've probably had most of your shots. But even bigger kids may need a shot once in a while. Find out more about them in this article for kids. Read More Immunizations Missing out on shots puts you at more serious risk than you might think. That one little "ouch" moment protects you from some major health problems. Read More Tetanus Tetanus is a bacterial infection that grows in a contaminated wound. Because it can be serious, it's important to get immunized. Find out more. Read More Whooping Cough (Pertussis) Pertussis is characterized by severe coughing spells that end in a whooping sound when the person breathes in. It can be prevented with the pertussis vaccine, part of the DTaP immunization. Read More 5 Tips for Surviving Shots If you're afraid of shots, you're not alone. Next time your doc asks you to roll up your sleeve, try these tips. Read More How Can I Comfort My Baby During Shots? Find out what the experts have to say. Read More Immunization Schedule Which vaccines does your child need and when? Use this immunization schedule as a handy reference. Read More Common Questions About Immunizations Immunizations have protected millions of children from potentially deadly diseases. Learn about immunizations and find out exactly what they do - and what they don't. Read More Your Child's Immunizations Immunizations protect kids from many dangerous diseases. Find out what vaccines your child needs to grow up healthy. Read More How Vaccines Help (Video) Vaccines help keep kids healthy, but many parents still have questions about them. Get answers here. Read More Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.