By KidsDirect Editorial Team
Pertussis is a bacterial infection most parents know by its nickname, whooping cough. It gets that name from the sharp gasping sound a person makes while gasping for breath after a coughing fit. Adults and older kids usually shake it off after a rough few weeks. Babies don’t get off nearly that easy.
What Is Whooping Cough?
Whooping cough spreads easily through coughing and sneezing. It starts out looking a lot like an ordinary cold. Runny nose, mild cough, maybe a low fever. The trouble shows up a week or two later. That’s when the cough turns into sudden, violent fits that can leave a person gasping for air. Babies younger than a year old can have it worse. It can cause pauses in breathing without much coughing at all, and that’s part of what makes it so dangerous at that age.
Infants can’t finish their first round of vaccine doses until they’re several months old. That leaves a real window early on where they’re exposed but not yet protected. Pregnant women get a booster during every pregnancy for exactly this reason. Some of that protection passes to the baby before birth.
The Vaccine Schedule
Young children get pertussis protection through DTaP, a combination shot that also covers diphtheria and tetanus. The usual schedule runs at 2, 4, and 6 months. Additional doses follow at 15 through 18 months and again at 4 through 6 years.
Protection has usually faded some by the preteen years. A booster called Tdap is recommended around that point, typically age 11 or 12. Doctors also recommend a Tdap dose during each pregnancy, regardless of when the last one was given. That’s what protects a newborn during those first vulnerable months.
Possible Side Effects
Most kids handle DTaP and Tdap just fine. Soreness where the shot went in, mild fever, fussiness, and low energy are the most common reactions. They usually clear up within a day or two. Serious reactions are rare. A few are worth a call to the doctor though, including a high fever over 105 degrees, a seizure, or crying that goes on for three hours straight.
Whooping cough cases still show up in the United States every year, often in communities where vaccination rates have dipped. Staying current on the DTaP and Tdap schedule is one of the more direct ways to keep a household’s youngest member protected. That protection matters most during the exact months they’re most at risk. For more on how this fits into the bigger picture, take a look at our guide on vaccines in general. Or head back to the full vaccine timeline.
