Many colleges require students to get a meningococcal vaccine before moving into a dorm. Some summer camps also require it. And there's good reason.
Meningococcal disease can become life threatening quickly, and teens are at higher risk of getting it. It's a leading cause of bacterial meningitis in teens. Meningitis is a dangerous inflammation of the lining of the brain and spinal cord. Two meningitis vaccines protects against four types of meningococcal disease. An additional type of vaccine...
You are bitten by an animal or wounded by an object that might be contaminated with dirt, feces, or dust, and you have not been immunized against tetanus or received a booster within the last five years. Tetanus infection can be fatal and should be treated as soon as possible.
SOURCES: CDC: "Tetanus (Lockjaw) Vaccination." National Network For Immunization Information: "Diphtheria, Tetanus, Pertussis (DTaP)." MedlinePlus: "Tetanus." National Association for Infectious Diseases: "Tetanus (Lockjaw)."