State and local "police powers" provide surveillance activities. Health departments usually have legal authority to investigate unusual:
A) Pandemics
B) Clusters of illness
C) World trends of disease
D) Cases of the common cold and pneumonia

Question

Quizplus · Accepted Answer

Health departments usually have legal authority to investigate unusual clusters of illness. While pandemics and world trends of disease may also fall under the purview of public health surveillance, they are not considered "unusual" events. The common cold and pneumonia are common illnesses and would not typically warrant a health department investigation unless there was evidence of an outbreak or unusual pattern of cases.

State and Local "Police Powers" Provide Surveillance Activities