Quick Read: Whooping Cough Vaccine’s Protection Fades Quickly
The whooping cough — or pertussis — vaccine used today is different from the one used as recently as the late 1990s. The older vaccine used whole pertussis cells, but it was shelved in favor of a vaccine with purified cells. The newer vaccine has fewer side effects, doctors have noted that its efficacy wanes more quickly. This new study reinforces prior reports.