Serum samples from children immunized with a meningococcal serogroup B vaccine demonstrated potent serum bactericidal antibody activity against the hypervirulent Neisseria meningitidis serogroup W strain circulating in England. The recent introduction of this vaccine into the United Kingdom national immunization program should also help protect infants against this endemic strain.
Keywords: Bexsero; England; Menveo; Neisseria meningitidis; ST11 clonal complex; bacteria; endemic; immunization; meningitis; meningococcal W disease; meningococci; prevention; serum bactericidal antibody activity; vaccine.