Pertussis bacteria (Bordetella pertussis)

Pertussis bacteria (Bordetella pertussis). Photo courtesy Sanofi Pasteur (


Pertussis (also known as whooping cough) remains a serious public health threat in the United States. Infants are particularly vulnerable to serious disease and death from pertussis infection. In conjunction with other EIP sites, the California Department of Public Health, and the Centers for Disease Control and Prevention, CEIP is studying the effectiveness of existing strategies to prevent pertussis in infants.


  • Measure the effectiveness of vaccinating pregnant women in preventing pertussis among infants less than 12 months of age
  • Determine if infants aged 6 to 12 months born to women vaccinated against pertussis during pregnancy have a higher risk of pertussis infection
  • Measure the effectiveness of vaccinating close contacts and caregivers (also known as “cocooning”) of infants less than two months of age in preventing pertussis infection
  • Disseminate information that can lead to improvements in public health practice and the development of interventions to reduce the burden of pertussis


For questions about pertussis surveillance and projects, please contact:

Pamala Daily Kirley, CACLS, MPH
Project Coordinator, Influenza and Pertussis