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JAMA Pediatr. 2016 May 1;170(5):459-65. doi: 10.1001/jamapediatrics.2016.0047.

Epidemiological and Economic Effects of Priming With the Whole-Cell Bordetella pertussis Vaccine.

Author information

1
New Mexico State University, Las Cruces.
2
Santa Fe Institute, Santa Fe, New Mexico.
3
Center for Infectious Disease Modeling and Analysis, Yale School of Public Health, New Haven, Connecticut.
4
Center for Infectious Disease Modeling and Analysis, Yale School of Public Health, New Haven, Connecticut4Yale Program in Computational Biology and Bioinformatics, Yale University, New Haven, Connecticut.
5
New Mexico State University, Las Cruces2Santa Fe Institute, Santa Fe, New Mexico.

Abstract

IMPORTANCE:

Current acellular pertussis vaccines may not protect against transmission of Bordetella pertussis.

OBJECTIVE:

To assess whether a priming dose of whole-cell pertussis (wP) vaccine is cost-effective at reducing pertussis infection in infants.

DESIGN, SETTING, AND PARTICIPANTS:

Mathematical model of pertussis transmission fit to US incidence data in a simulation of the US population. In this simulation study conducted from June 2014 to May 2015, the population was divided into 9 age groups corresponding to the current pertussis vaccination schedule and fit to 2012 pertussis incidence.

INTERVENTIONS:

Inclusion of a priming dose of wP vaccine into the current acellular pertussis vaccination schedule.

MAIN OUTCOMES AND MEASURES:

Reductions in symptomatic pertussis incidence by age group, increases in wP vaccine-related adverse effects, and quality-adjusted life-years owing to changing vaccine schedule.

RESULTS:

Switching to a wP-priming vaccination strategy could reduce whooping cough incidence by up to 95% (95% CI, 91-98), including 96% (95% CI, 92-98) fewer infections in neonates. Although there may be an increase in the number of vaccine adverse effects, we nonetheless estimate a 95% reduction in quality-adjusted life-years lost with a switch to the combined strategy and a cost reduction of 94% (95% CI, 91-97), saving more than $142 million annually.

CONCLUSIONS AND RELEVANCE:

Our results suggest that an alternative vaccination schedule including 1 dose of wP vaccine may be highly cost-effective and ethically preferred until next-generation pertussis vaccines become available.

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