The vaccines for Bortella pertussis bacteria, which causes whooping cough, does not confer lifelong immunity. In other words, fully vaccinated children who then become teenagers and then adults lose immunity, can acquire the infection and then spread it. Should babies acquire pertussis, as the public has discovered, it can be deadly. The persistent cough tires the baby, causes difficulty breathing, and can make them turn blue or cyanotic resulting in pneumonia or convulsions. According to CDC, about half of children aged 1 year and younger need to be hospitalized if infected with the illness. Although older children and adults can handle the cough, the infection can cause them to cough for weeks or months.
In 2005, a new vaccine known as dTap not only provides protection for both tetanus and diphtheria but also pertussis. The dTap vaccine replaces the dT vaccine and it is recommended that pre-teens starting at age 11, adolescents, and adults up to age 65 get the dTap vaccine as the booster every 10 years rather than the dT. Since the change, I've been a big proponent of getting my patients vaccinated. Many roll their eyes, particularly when I give it to them for visits outside a physical exam, like during allergy seasons, an evaluation for a cold or sports injury.
CDC advice says it best -
Most pregnant women who were not previously vaccinated with Tdap should get one dose of Tdap postpartum before leaving the hospital or birthing center. Getting vaccinated with Tdap is especially important for families with and caregivers of new infants.Newborns and infants aren't fully immunized at a young age and are at highest risk. To protect them from this deadly and preventable disease, those around them, caregivers, siblings, relatives, and visitors must do the right thing. Roll-up your sleeves. Take a little pain. Know that you are building a wall of protection around your little one.
The easiest thing for adults to do is to get Tdap instead of their next regular tetanus booster—that Td shot that they were supposed to get every 10 years. The dose of Tdap can be given earlier than the 10-year mark, so it's a good idea for adults to talk to a healthcare provider about what's best for their specific situation.
Be sure to ask your doctor for the dTap rather than the dT. Although the new formulation of the vaccine has been around for years, research shows doctors usually lag national guidelines and changes for years as well. Sad, but true. Good bedside manner alone doesn't mean up to date care.
This reminds me to email my doctor to get scheduled for my dTap vaccine. It's been 10 years since my last one.