All seniors need their second meningitis (MCV4) vaccination in accordance with current state health requirements for school attendance and graduation. MCV4 (Meningococcal Conjugate Vaccine) is the acceptable vaccine. It protects against 4 types- A,C,W, and Y. MenB is recommended but not required. These vaccinations are NOT interchangeable. Illinois state law requires that your senior student receive the Meningococcal Conjugate Vaccine (MCV4) in order to meet school health requirements.