Skip to content

Return to the Full Article View You can republish this story for free. Click the "Copy HTML" button below. Questions? Get more details.

Several Factors Contributing to California’s Record-Breaking Whooping Cough Epidemic

Whooping cough, or pertussis, has affected more than 5,600 Californians this year, the most since 1950, according to the California Department of Public Health.

Health officials say that cyclical variations in disease prevalence, improved detection methods and low vaccination rates could help explain the high number of whooping cough cases reported this year.

In a California Healthline Special Report by Mina Kim, experts discussed factors that could be contributing to the latest pertussis outbreak. The Special Report includes comments from:

  • James Cherry, professor of pediatrics at UCLA;
  • Kathleen Harriman, chief epidemiologist for vaccine-preventable diseases at DPH; and
  • Yvonne Maldonado, professor of pediatrics at Stanford University and attending physician at Lucile Packard Children’s Hospital.

In September, Gov. Arnold Schwarzenegger (R) signed legislation (AB 354) that will require all seventh graders to show proof that they have received a whooping cough booster shot starting in July 2012 (Kim, California Healthline, 10/20).

The complete transcript of this Special Report is available as a PDF.

KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.

Some elements may be removed from this article due to republishing restrictions. If you have questions about available photos or other content, please contact khnweb@kff.org.