1. Centers for Disease Control and Prevention. Manual for the Surveillance of Vaccine-Preventable Diseases: Chapter 10: Pertussis. http://www.cdc.gov/vaccines/pubs/surv-manual/chpt10-pertussis.html . Updated May 19, 2015. Accessed August 18, 2014.
2. Council of State and Territorial Epidemiologists. Position Statements: Overview. http://www.cste.org/?page=PSInfo . Accessed August 18, 2014.
3. Centers for Disease Control and Prevention. National Notifiable Disease Surveillance System: pertussis/whooping cough (Bordetella pertussis) 1997 case definition revised May 2, 1997. https://wwwn.cdc.gov/nndss/conditions/pertussis/case-definition/1997/05/02/ . Updated May 6, 2015. Accessed August 14, 2014.
4. Centers for Disease Control and Prevention. National Notifiable Disease Surveillance System: pertussis/whooping cough (Bordetella pertussis) 2010 case definition. https://wwwn.cdc.gov/nndss/conditions/pertussis/case-definition/2010/ . Updated May 6, 2015. Accessed August 14, 2014.
5. Centers for Disease Control and Prevention. National Notifiable Disease Surveillance System: pertussis/whooping cough (Bordetella pertussis) 2014 case definition. https://wwwn.cdc.gov/nndss/conditions/pertussis/case-definition/2014/ . Updated May 6, 2015. Accessed August 14, 2014.