“Highly susceptible population” means a group of persons who are more likely than other people in the general population to experience foodborne disease because both of the following conditions exist:
(a) The group is comprised of immunocompromised persons, preschool age children, or older adults.
(b) The group obtains food at a facility, including, but not limited to, a kidney dialysis center, hospital, nursing home, or senior center, that provides services, such as custodial care, health care, assisted living, or socialization services.