More recently, a proteomic analysis was performed
on B. parapertussis OMVs, and results showed pertactin,
outer membrane porin precursor and outer membrane
OmpQ as major components. B. parapertussis OMVs used
as a vaccine in intranasal challenge model showed that
immunized mice were protected against B. parapertussis
and also against B. pertussis challenge. These findings are
interesting as the commercial vaccine used for B. pertussis
offers little protection against B. parapertussis