The following are true for Bordetella peussis, EXCEPT:

Whole cell vaccine was effective but had side effects. Acellular vaccines are purified preparations. Acellular peussis vaccines contain inactivated peussis toxin which may provide protection against disease but not prevention against infection. It can create career form in adults which can affect the infants. Immunization reduces disease but outbreaks continue Ref: Textbook of Microbiology By Ananthanarayan and Panicker, 5th Edition, Page 314