It appears the question is incomplete. A better phrasing of the question might be: "What is the meningococcal vaccine, and what does it protect against?" Based on the provided reference, here's the answer:
The meningococcal vaccine protects against meningococcal disease. There are different types of meningococcal vaccines.
MenACWY Vaccine
- The MenACWY vaccine prevents infection with meningococcal types A, C, W, and Y.
Recommendations for MenACWY vaccine according to the CDC
- The CDC recommends MenACWY for all preteens at 11–12 years old.
