Starting from 0.00am on June 1 (Hong Kong Time), inbound persons boarding flights from overseas places or Taiwan are only required to present when boarding the negative result proof of a PCR-based nucleic acid test conducted within 48 hours prior to scheduled time of departure and with samples collected by a laboratory or healthcare institution (proof of the 48-hour pre-departure nucleic acid test). They will no longer need to present the documentary proof of the ISO 15189 accreditation or recognition by the relevant authority of the government of the place of the laboratory or the healthcare institution.