Michigan Compiled Laws, Chapter 333. Health § 333.9201

(a) “Camping” means attendance at a residential, day, troop, or travel camp conducted for more than 4 school-age children, apart from their parents, guardians, or persons in loco parentis for 5 or more days or parts of days in a 14-day period.

(b) “Immunizing agent” means a vaccine, antibody preparation, or other substance used to increase an individual's immunity to a disease or infectious agent.

(c) “Infectious agent” means that term as defined in R 325.9031 of the Michigan administrative code.

(d) “Registry” means the childhood immunization registry or Michigan care improvement registry established under section 9207. 1