Appearance of Bordetella pertussis Strains Not Expressing the Vaccine Antigen Pertactin in Finland

Prevalence and Genetic Characterization of Pertactin-Deficient Bordetella pertussis in Japan

(2012) Nao Otsuka et al.   PLoS One

Rationale for pertussis booster vaccination throughout life in Europe

(2011) Fred Zepp et al.   LANCET INFECTIOUS DISEASES

Bordetella pertussisand Pertussis Vaccines

(2009) Nicole Guiso   CLINICAL INFECTIOUS DISEASES

Bordetella pertussisstrain variation and evolution postvaccination

(2009) Teemu Kallonen et al.   Expert Review of Vaccines

First report and detailed characterization of B. pertussis isolates not expressing pertussis toxin or pertactin

(2009) V. Bouchez et al.   VACCINE

Bordetella pertussis Isolates in Finland: Serotype and Fimbrial Expression

(2008) Eriikka Heikkinen et al.   BMC MICROBIOLOGY