Coronavirus in Hong Kong: why has quarantine period remained 14 days?

Quarantine has been set at 14 days from the very first days of Covid-19, despite the fact that very little was known at that time. Is it logical that it has not been adjusted despite nine monthsࢀ™ experience and huge amounts of information known about the disease? Hong Kong probably has the most (and best) data worldwide from the hundreds of thousands of arrivals at the airport who have all been tested, quarantined and monitored. Surely we must now know how many people tested negative on arrival but were subsequently infected, after the second, third, fourth or more days. Hong…