A nurse is teaching a newly licensed nurse about reportable communicable diseases. Which of the following diseases should the nurse include in the teaching?

A. While Group A streptococcus infections (such as strep throat) are common, not all cases are legally required to be reported. Only certain complications, like invasive group A strep infections, may be reportable depending on local public health regulations. B. Roseola is a common viral illness in children, typically mild and not a reportable disease to public health authorities. C. Mumps is a reportable communicable disease because it can lead to outbreaks and complications, such as meningitis or orchitis. Reporting to public health authorities enables contact tracing, outbreak control, and community protection. Nurses must notify the appropriate authorities when a case is identified. D. RSV is not a reportable disease in most jurisdictions, although outbreaks in healthcare settings are monitored internally. Routine reporting to public health authorities is not required.