The meningococcal B (MenB) vaccine helps protect against meningitis and sepsis (blood poisoning) caused by meningococcal bacteria B.
The Bexsero Meningococcal Group B vaccine for injection in pre-filled syringe is used in Scotland.
The MenB vaccine is highly effective against serious infections caused by meningococcal group B bacteria. It’s also likely to provide some protection against other strains of meningococcal disease.
All medicines (including vaccines) are tested for safety and efficacy (how well a vaccine prevents illness during testing) before they’re allowed to be used. Once they’re in use, the safety and effectiveness (how well a vaccine prevents illness once it’s being used within a population) of vaccines continues to be carefully monitored.
Last updated:
12 January 2026