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Coronavirus pandemic
Hong KongHealth & Environment

Coronavirus: imported cases in Hong Kong mostly detected within first 14 days of quarantine, but 21-day rule ‘still needed to guard against outbreak’

  • Experts insist the 21-day rule for high-risk travellers is still needed to guard against community outbreaks, amid city’s zero-Covid policy
  • Analysis of cases in recent months also reveals vaccinated patients less likely to develop symptoms or require antiviral drugs

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Hong Kong’s 21-day quarantine is among the world’s toughest. Photo: Sam Tsang
Elizabeth Cheung
Nearly all imported Covid-19 cases in Hong Kong were detected in the first 14 days of quarantine, health authorities have revealed, but experts insist that the 21-day isolation period for some travellers should be maintained to prevent community outbreaks.

Analysis of the city’s imported coronavirus cases in recent months also showed that vaccinated patients were less likely to develop symptoms or lung conditions, or require antiviral drugs, underscoring the importance of being inoculated.

Hong Kong’s 21-day quarantine, required for travellers from high-risk countries such as Britain, India and the United States, as well as for unvaccinated arrivals from medium-risk places, is among the world’s toughest.

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In a press briefing on Tuesday, controller of the Centre for Health Protection Dr Edwin Tsui Lok-kin said more than 96 per of the city’s imported cases were picked up by the seventh day of quarantine, and 99 per cent were detected by the 14th day.

Passengers at Hong Kong International Airport wait to be transported to their quarantine facilities. Photo: K. Y. Cheng
Passengers at Hong Kong International Airport wait to be transported to their quarantine facilities. Photo: K. Y. Cheng
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The remaining 1 per cent of cases were detected before the 21st day.

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