Abstract
Bordetella pertussis causes pertussis, which is characterized by paroxysmal coughing. This disease is generally prevented through vaccination; however, the number of pertussis cases is increasing worldwide despite high vaccination coverage. We previously reported that an autotransporter of B. pertussis, virulence-associated gene 8 (Vag8), causes coughing in combination with pertussis toxin and lipooligosaccharide. Here, we show that immunization with Vag8 protected mice from coughing after B. pertussis infection and enhanced the efficacy of a current pertussis vaccine containing pertussis toxoid against the cough. Our findings indicate that Vag8 could be a vaccine antigen to prevent pertussis cough.
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