Regulation 21

A Port Health Officer may require that all passengers and crew of an aircraft shall remain on board the aircraft until such time as he has performed such medical examination and carried out such health procedures as he may think fit.

All disembarking passengers and crew from an aircraft shall, unless exempted by a Port Health Officer, present themselves for health clearance and shall not leave the airport without obtaining such clearance.

The master, owner or agent of an aircraft shall ensure that all disembarking passengers and crew are presented to a Port Health Officer for health clearance.