This file may not be suitable for users of assistive technology.
Request an accessible format.
If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email email@example.com.
Please tell us what format you need. It will help us if you say what assistive technology you use.
Whooping cough is a highly infectious disease that is usually caused by Bordetella pertussis. A similar illness is caused by B. parapertussis, but this is not preventable with presently available vaccines.