Hong Kong's government has said that it would shorten the quarantine period for vaccinated people arriving in the city to seven days from 14 days provided travellers show sufficient antibodies against the coronavirus, Reuters reports.

Leader Carrie Lam, who was speaking at a press briefing, said the new measures were only applicable to people who have logged 14 days following their second vaccination dose. The rule change is due to take effect from the end of the month, she said.

For those arriving from countries deemed "very high risk" the quarantine period remains unchanged at 21 days.