Department of Medicine, Section of Infectious Disease and International Health, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire 03756, USA. kathy.kirkland@hitchcock.org
We assessed the kinetics of the humoral immune response to pertussis antigens following vaccination of health care personnel with adult tetanus-diphtheria-acellular pertussis vaccine (Tdap). By 2 weeks after vaccination, 88%-94% of subjects demonstrated a booster response. This brisk response of adults to Tdap supports a role for vaccination in pertussis outbreak control.