The Truth About Vaccines, page-4396

Not only is this vaccine potentially deadly to babies, and injurious to the general population, it can shed and spread whooping cough to the most vulnerable and even health authorities finally admit that it is completely worthless!

Cause of pertussis outbreaks: vaccine failure, not failure to vaccinate.

This has been known for many years but is only now being recognised by authorities.

CDC researchers said the bacteria behind the disease has mutated.

States have reported school-wide outbreaks - largely in the fully vaccinated..

Children less protected by whooping cough vaccine than they once were, CDC warns

More here; https://www.usatoday.com/story/life/allthemoms/2019/03/14/whooping-cough-vaccine-less-effective-cdc-warns-as-outbreaks-hit-schools/3161859002/