Reemergence of Bordetella parapertussis, United States, 2019–2023

Abstract

To determine changes in Bordetella pertussis and B. parapertussis detection rates, we analyzed 1.43 million respiratory multiplex PCR test results from US facilities from 2019 through mid-2023. From mid-2022 through mid-2023, Bordetella spp. detection increased 8.5-fold; 95% of detections were B. parapertussis. While B. parapertussis rates increased, B. pertussis rates decreased.

Keywords

• Bordetella parapertussis
• Bordetella pertussis
• whooping cough
• surveillance network
• public health
• bacteria