Rate of B. pertussis infections in adolescents and adultsa

Author (reference)LocationYrAnnual rate (%)
Deville et al. (206)Los Angeles, Calif.1984-19898
Cromer et al. (184)Columbus, Ohio1985-1990∼1
Hodder et al. (354)Cleveland, Ohio1989-19923
Ward et al., submittedEight U.S. cities1997-19991.3
  • a Infections were determined by the demonstration of a significant rise in serum antibody titer to PT in successive serum samples.