from The Tenpenny Report:

In the U.S., there are two types of meningococcal vaccines that may be given to children between the ages of 11-18 years of age: MenACWY and MenB. MenB is not yet routinely given or recommended in the US, and should only be offered if your child is considered to be at an increased risk (i.e. asplenia or persistent complement component deficiencies). For that reason, we will focus here on the MenACWY vaccine.