New York Codes, Rules and Regulations
Title 10 - DEPARTMENT OF HEALTH
Chapter I - State Sanitary Code
Part 2 - Communicable Diseases
Isolation, Quarantine and Restriction
Section 2.27 - Physician to isolate person with highly communicable disease and give instructions regarding prevention of spread of the disease

It shall be the duty of the attending physician immediately upon discovering a case of highly communicable disease (as defined in section 2.1 of this Part) to cause the patient to be isolated, pending official action by the health officer. Such physician shall also advise other members of the household regarding precautions to be taken to prevent further spread of the disease and shall inform them as to appropriate specific preventive measures. He shall in addition furnish the patient's attendant with such detailed instructions regarding the disinfection and disposal of infective secretions and excretions as may be prescribed by the State Commissioner of Health.