SDCL § 34-22-41: "Public health emergency" defined.

For the purposes of §§ 34-3-26, 34-16-22 to 34-16-25, inclusive, and 34-22-41 to 34-22-44, inclusive, a public health emergency is an occurrence or imminent threat of an illness, health condition, or widespread exposure to an infectious or toxic agent that poses a significant risk of substantial harm to the affected population.