Pregnant women can get the meningococcal vaccine, but it's only recommended for those with certain immune problems or those likely to be exposed to meningitis. With the newer MCV4 and MenB vaccines, there hasn't been as much study in pregnant women compared to the MPSV4 vaccine. read more
Meningitis Prevention: Avoid the Spread of Disease. You cannot get meningitis from casual contact, such as by breathing the air that an infected person has breathed. These bacteria do not live long outside the human body. But you can get it from close or prolonged contact with an infected person. read more
So for young adults I would ask your doctor to have you vaccinated against 4 kinds of N. meningitidis serotypes A, C, Y and W-135 in one quadrivalent vaccine, and a separate one against serotype B, young children should be vaccinated against Hemophilus influenzae too. read more