Under the initial agreement, the travel bubble was to be suspended if the number of untraceable local infections in either Singapore or Hong Kong exceeded five on a seven-day moving average. The current average in Hong Kong is nearly four, prompting Yau and Singapore's transport minister, Ong Ye Kung, to postpone the inaugural flight.
On Friday, Hong Kong's top health official said that the city had “probably entered” a new wave of cases. Recent clusters have spanned taxi drivers, a dance studio and hotels.
Hong Kong has confirmed a total of 5,561 cases, including 108 deaths. Singapore has reported 58,148 cases, but only 28 fatalities.
Prior to the postponement, Singapore said Saturday morning that travelers arriving from Hong Kong via the bubble would be required to take a coronavirus test on arrival. Originally, only people landing in Hong Kong were to be required to be tested.
Ong said in a Facebook post that the postponement is a “sober reminder that the COVID-19 virus is still with us."
“I can fully understand the disappointment and frustration of travellers who have planned their trips. But we think it is better to defer from a public health standpoint,” he wrote.