A nurse is developing a surveillance guide to assist with monitoring for bioterrorist attacks. Which of the following situations should the nurse include as an indication of possible bioterrorism?

Report of rash and fever among over half the attendees at a recent college sports event

Report of four cases of tuberculosis among inmates residing at a correctional facility

Report of five cases of Fifth disease among preschoolers at a local day care facility

Report of increased national incidences of pertussis following decreased immunization rates