For a 16-year-old male, what is the recommended interval between the quadrivalent meningococcal (MenACWY) booster dose and the serogroup B meningococcal (MenB) doses?

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Last updated: October 13, 2026 • View editorial policy

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Meningococcal Vaccine Dosing Intervals for a 16-Year-Old Male

For a healthy 16-year-old male, the MenACWY vaccine is given as a single booster dose (if previously vaccinated at age 11-12), and if MenB vaccination is chosen through shared clinical decision-making, the two doses are spaced 6 months apart. 1

MenACWY (Quadrivalent) Vaccine

For routine adolescent vaccination:

  • First dose: Given at age 11-12 years
  • Booster dose: Given at age 16 years
  • Interval: The booster is a single dose, not a 2-dose series at age 16

Since your patient is 16 years old, if he already received his first MenACWY dose at age 11-12, he only needs one booster dose now—there is no interval to wait between "2 vaccines" for MenACWY at this age. 1

MenB (Serogroup B) Vaccine

MenB vaccination at ages 16-23 is based on shared clinical decision-making (not routine recommendation). If you and the patient decide to proceed with MenB vaccination, the dosing depends on which vaccine is used:

MenB-FHbp (Trumenba):

  • 2 doses at 0 and 6 months for healthy adolescents 1
  • For those at increased risk: 3 doses at 0,1-2, and 6 months 1

MenB-4C (Bexsero):

  • 2 doses at 0 and 6 months (updated from the previous ≥1 month interval) 2
  • For those at increased risk: 3 doses at 0,1-2, and 6 months 2

Critical point: The two MenB vaccines are not interchangeable—you must use the same product for all doses in the series. 1

Clinical Algorithm for This Patient

  1. Verify vaccination history: Did he receive MenACWY at age 11-12?

    • Yes: Give MenACWY booster now (single dose)
    • No: Give first MenACWY dose now

  2. Discuss MenB vaccination (shared clinical decision-making):

    • Preferred age is 16-18 years 1
    • If proceeding, choose either MenB-FHbp or MenB-4C
    • Schedule second dose 6 months later 1, 2

  3. Both vaccines can be given at the same visit but at different anatomic sites 1

Common Pitfalls to Avoid

  • Don't confuse the MenACWY booster schedule with a 2-dose series: At age 16, it's just one booster dose for routine vaccination
  • Don't mix MenB vaccine products: If you start with Trumenba, finish with Trumenba; if you start with Bexsero, finish with Bexsero 1
  • Don't use the old 1-month interval for MenB-4C: The FDA updated this to 6 months in 2024 for healthy adolescents 2
  • Remember the minimum interval is 4 weeks between any two MenB doses if doses need to be repeated or given off-schedule 1

References

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Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.