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

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

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 …

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 …

METHODS: We modeled pertussis risk in relation to Tdap vaccination status among
adolescents beginning on their 10th birthday. We estimated the hazard ratio (HR) for each …

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) …

Purpose Despite high national vaccination coverage with tetanus toxoid, reduced diphtheria
toxoid, and acellular pertussis (Tdap) vaccines among US adolescents, rates of adolescent …

OBJECTIVE: Recent universal vaccination efforts among children in the United States have
markedly changed hospitalization patterns for many vaccine-preventable diseases. Infants …

BACKGROUND AND OBJECTIVES: Pertussis incidence is increasing, possibly due to the
introduction of acellular vaccines, which may have decreased the durability of immune …

Background. The incidence of pertussis in the United States has been increasing. Adult
vaccination is important to reduce disease burden and prevent transmission to infants at …