Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The mean titers of anti-PT, anti-FHA, and anti-PRN IgGs sharply increased with Tdap booster vaccination in all groups. PT, pertussis toxin; FHA, filamentous hemagglutinin; PRN, pertactin; Tdap, reduced dose tetanus-diphtheria-acellular pertussis.
