Three people who returned to Singapore from India tested positive for COVID-19, as the city-state reported 188 new coronavirus cases on Monday, taking the national tally to 55,292.
Singapore's total number of COVID-19 cases rose past 55,000 on Sunday - the country's 55th National Day.
In his National Day message, Prime Minister Lee Hsien Loong said Singapore would need unity and resilience more than ever to fight COVID-19.
The Ministry of Health (MOH), in an update on Monday, said that of the new 188 COVID-19 cases, the vast majority were work permit holders currently under quarantine.
There were 12 new imported cases, all of whom were placed on stay-home notice upon arrival in Singapore.
In addition, there was one new case in the community, a Singaporean.
The three imported cases reported on Sunday came from India. A Singaporean had returned from India on July 25 and two Indian nationals holding work passes had arrived on July 26.
Upon their arrival in Singapore, they went to dedicated facilities to serve their stay-home notices, where they were tested for COVID-19.
About 23,500 workers are still serving out their isolation period at quarantine facilities.
"The workers in these quarantine facilities will be tested when their isolation ends, and we expect the case counts to remain high in the coming days, before tapering down thereafter," the ministry said.
The ministry also said the number of new cases in the community has remained stable, at an average of two cases per day in the past 14 days.
The prime minister in his National Day message noted that many countries have seen their COVID-19 case tallies rise sharply after initially bringing the pandemic under control and easing restrictions.
This can happen to us too, despite all our precautions, he said, adding that the crisis was far from over .
Lee added that it would most likely take a year or two before a vaccine is widely available.
Until then, we have to maintain our vigilance and resolve, to keep ourselves, our loved ones and our neighbours all safe, the prime minister said.