Health care facilities licensed pursuant to Regulation 61-16, Minimum Standards for Licensing Hospitals and Institutional General Infirmaries, and designated as "privately-owned education infirmaries" may be established within the jurisdiction of a larger nonmedical institution which maintains and operates organized facilities and services to accommodate two or more nonrelated students, faculty, and staff with illness, injury, or infirmity for a period exceeding twenty-four hours for the diagnosis, treatment, and care of such persons and which provides medical, surgical, and professional nursing care, and in which all diagnoses, treatment, and care are performed under the direction of persons currently licensed to practice medicine and surgery in South Carolina. However, privately-owned education infirmaries also may care for patients who are not students, faculty, or staff when the privately-owned education infirmary has agreed to provide such care to this class or patients prior to January 1, 2007.