New York Codes, Rules and Regulations
Title 10 - DEPARTMENT OF HEALTH
Chapter II - Administrative Rules and Regulations
Subchapter G - Aids Testing, Communicable Diseases and Poisoning
Part 66 - Immunizations and Communicable Diseases
Subpart 66-1 - School Immunization Requirements
Section 66-1.10 - Exclusion in event of disease outbreak

(a) For those diseases listed in PHL section 2164 only, in the event of an outbreak, as defined in section 2.2(d) of this Title, of a vaccine-preventable disease in a school, the commissioner, or his or her designee, or in the City of New York, the Commissioner of Health of the New York City Department of Health and Mental Hygiene, may order the appropriate school officials to exclude from attendance all students who either have been exempted from immunization under section 66-1.3(c) [or (d)] of this Subpart, or are in the process of receiving required immunizations pursuant to section 66-1.3(b) of this Subpart.

(b) The exclusion shall continue until the commissioner or his or her designee, or in the City of New York, the Commissioner of Health of the New York City Department of Health and Mental Hygiene, determines that the danger of transmission has passed.

(c) Schools must maintain a list of susceptible students who should be excluded from attendance in the event of an outbreak of vaccine preventable disease. This list must include all students who have been excused from immunization under section 66-1.3(c) of this Subpart and students who are in the process of completing immunization series or awaiting the results of serologic testing for any vaccine preventable disease specified under section 66-1.3(b) of this Subpart. The list shall be updated each time a new student enrolls in the school or a student's immunization status changes.