73(1)Paragraphs 74 to 76 apply where, during a transmission control period—
(a)a person is (whether or not pursuant to the exercise of powers under this Part of this Schedule) at a place in Northern Ireland which is suitable for screening and assessment, and
(b)a public health officer has reasonable grounds to suspect that the person is potentially infectious.
(2)A public health officer may exercise a power conferred by paragraphs 74 to 76 only if the officer considers that it is necessary and proportionate to do so—
(a)in the interests of the person,
(b)for the protection of other people, or
(c)for the maintenance of public health.