Acknowledgements
The authors thank Joanne Wolter for assistance in preparation of the manuscript.
Financial & competing interests disclosure
Jan T Poolman is an employee of Crucell and is a designated inventor on a variety of patents owned by GlaxoSmithKline Biologicals S.A. (GSK). Scott A Halperin has received research support for undertaking clinical trials from both Sanofi Pasteur and GlaxoSmithKline, who are manufacturers of acellular pertussis vaccines, but has no financial interest in either company. Hans Hallander was involved in the 1990s Swedish NIH sponsored efficacy trial. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
Writing assistance was utilized in the production of this manuscript and was funded by Crucell.