Section 62 of the Principal Act is amended as follows:(a) by inserting in subsection (1) ", or on the application of a person under subsection (2) ," after "motion" ;(b) by inserting in subsection (1) ", or a witness in respect of the proceedings," after "to the proceedings" ;(c) by omitting from subsection (2) "or a party to" and substituting ", or a party to or witness in respect of," ;(d) by omitting subsection (3) and substituting the following subsections:(3) In any proceedings relating to a notifiable disease, a court, of its own motion or on the application of a person under subsection (4) , may make an order closing the court if satisfied that it is in the public interest to do so.(4) The Director, or a party to, or witness in respect of, any proceedings may apply to a court for an order referred to in subsection (3) .