The nurse is educating a client on meningitis. Which statements would the nurse include in the teaching? Select all that apply.

B Immunocompromised clients and older adults are at increased risk of meningitis. A The CDC recommends an initial vaccine at age 6 or upon entering first grade. D Young preschool-age children have the highest rates of infection from life-threatening meningococcal infection. E A booster vaccine is given at age 11 or 12 to children living in crowded spaces, such as group homes or summer camps. C Viral meningitis is the most common type; typically, no organisms are isolated from CSF cultures.