The set of regulations also included a new “provisional quarantine” rule that would have allowed CDC to detain people involuntarily for up to three days, with no mechanism for appeal. CDC had to believe a person was infected with certain pathogens. Among the diseases included were pandemic flu, infectious tuberculosis, plague, cholera, SARS, diphtheria, and viral hemorrhagic fevers such as Ebola.
The regulations also defined “ill person” to include anyone with the signs or symptoms commonly associated with the diseases in question. This gave CDC more flexibility in deciding whom to quarantine by capturing a broader and earlier range of symptoms as the basis for holding an individual. It allowed for greater exercise of discretion public health officials and those staffing quarantine stations.