Background. We estimated the vaccine effectiveness (VE) of tetanus-diphtheria-acellular
pertussis vaccine (Tdap) for preventing pertussis among adolescents during a statewide …

OBJECTIVES: To determine pertussis risk by diphtheria-tetanus-acellular pertussis (DTaP)
vaccination status and time since last DTaP dose. METHODS: Children born at Kaiser …

Objective To evaluate the impact of the adolescent Tdap (tetanus toxoid, reduced diphtheria
toxoid, and acellular pertussis vaccine) vaccination program on pertussis trends in the …

BACKGROUND: Acellular pertussis vaccines replaced whole-cell vaccines for the 5-dose
childhood vaccination series in 1997. A sixth dose of pertussis-containing vaccine, tetanus …

Infants in North America continue to suffer and die of pertussis today, in the 21st century,
despite the availability of safe and effective pertussis vaccines for. 60 years (Figure 1). A …

BACKGROUND: During the 1990s, the United States switched from combined diphtheria,
tetanus toxoids, whole-cell pertussis (DTwP) vaccines to combined acellular pertussis …

OBJECTIVE: To assess the risk of pertussis by time since vaccination in children in
Minnesota and Oregon who received 5 doses of acellular pertussis vaccines (DTaP) …

Background Infants aged< 1 year are at highest risk for pertussis-related morbidity and
mortality. In 2012, Tdap (tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis) …

Importance There is accumulating literature on waning acellular pertussis vaccine–induced
immunity, confirming the results of studies assessing the duration of protection of pertussis …

Background. Pertussis is among the most poorly controlled bacterial vaccine-preventable
diseases in the United States. In 2006, a tetanus, reduced-dose diphtheria, and acellular …