Which vaccine is given in a 2 dose series, 1 month apart for MenB?

Bexsero is the correct answer because it is a vaccine that can protect against MenB (meningococcal serogroup B). It is given in a 2 dose series, with the doses being 1 month apart. The other options are incorrect because Trumenba is a vaccine for meningococcal serogroups A, B, C, W, and Y, while Hiberix is a vaccine for Haemophilus influenzae type b. Gardasil 9 is a vaccine for 9 types of human papillomavirus. None of these vaccines are given in a 2 dose series, 1 month apart for MenB.