Scenario: mrs. jones, age 62, comes to the office to discuss her risk for contracting meningococcal disease. she shares that her 19-year old grandson, a freshman at the local university, was hospitalized for the disease and nearly died. , treatment worked and he has returned to school. however, she visited him both in the hospital and at his apartment when he was released. she expresses her concern for exposure and wonders if she should be given the vaccine. mrs. jones has no chronic illnesses and presents with no complaints today.