Indiana Code Title 16. Health § 16-41-7-2

(1) The individual with a communicable disease engages repeatedly in a behavior that has been demonstrated epidemiologically (as defined by rules adopted by the state department under IC 4-22-2) to transmit a serious communicable disease or that indicates a careless disregard for the transmission of the disease to others.

(2) The individual with a communicable disease's past behavior or statements indicate an imminent risk that the individual with a communicable disease will engage in behavior that transmits a serious communicable disease to others.

(3) The individual with a communicable disease has failed or refused to carry out the individual with a communicable disease's duty to inform under section 1 of this chapter.

(1) is a serious and present risk to the health of others as described in subsection (a);

(2) has engaged in noncompliant behavior;  or

(3) is suspected of being a person at risk (as described in section 1 of this chapter);