Is pertussis reporting on the rise in the U.S.?
An increasing number of cases of pertussis have been reported to the CDC since the 1980s. The increases are greatest among adolescents (aged 10-19 years), but an increase is also seen among infants younger than 5 months old. The reported increases may reflect greater awareness of pertussis to some degree. Even with the increase in reports among adolescents and very young infants, the number of reported cases is more than 97 % lower than in the pre-vaccine era.
