After they received the Tdap booster, the most frequently reported adverse events were pain (63.6%), redness (51.7%), and swelling (41.4%).

在他们接种完加强剂量后，最常见的不良反应是疼痛(63.6%)，红肿(51.7%)以及肿胀(41.4%)。

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In 2005, a booster shot called Tdap was introduced for adolescents and adults that inoculates against tetanus, diphtheria and pertussis.

CNN: Vaccination role unclear in whooping cough outbreak

"It's going to be a few years until we really know whether or not people need another booster dose, and what is the optimal timing for that booster dose" for Tdap, because it is so new, Martin said.

CNN: Vaccination role unclear in whooping cough outbreak