Vaccine is NOT available against which serotype of Neisseria meningitidis?: (A) A, (B) B, (C) C, (D) Y
Answer is B. Bivalent (groups A and C) or tetravalent (against groups A, C, Y and W-135) vaccines are available for protection against meningococcal meningitis. Ref: Park 21st edition, page 151.