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07 Nov 2022

20th Apr 2021

          As of 20 April 2021, 12pm, the Ministry of Health (MOH) has confirmed and verified 1 new case of locally transmitted COVID-19 infection. The case resides in a dormitory and there are no new cases in the community. There are 13 imported cases, who had already been placed on Stay-Home Notice (SHN) upon arrival in Singapore. Amongst the new cases today, 10 are asymptomatic, and were detected from our proactive screening and surveillance, while 4 were symptomatic. 

 Summary of new cases




Breakdown by


Breakdown by


Number of cases


Already in quarantine/ isolation before detection

Detected from surveillance




Cases in the community








Cases residing in dormitories








Imported cases

















2.    Overall, the number of new cases in the community has increased from 2 cases in the week before to 9 cases in the past week. The number of unlinked cases in the community has also increased from 2 cases in the week before to 4 cases in the past week. We will continue to closely monitor these numbers, as well as the cases detected through our surveillance programme.

3.            Amongst the 173 confirmed cases reported from 14 April to 20 April, 66 cases have tested positive for their serology tests, 89 have tested negative, and 18 serology test results are pending.

Case Details

a)            Cases in the community: 0

There are no cases in the community today.

Update on Cases 62045[1] and 62143[2]: As part of epidemiological investigations into Case 62045, MOH tested all her close contacts, including Case 61536, a 43 year-old Indian national who is a Work Pass holder.

Case 61536 is Case 62045’s brother-in-law, and had been identified as a household contact of Cases 62045 and 62143. He arrived from India on 2 April, and was asymptomatic. His on-arrival swab was positive for COVID-19 infection and he was conveyed to a hospital. He was subsequently assessed to be a recovered case based on his high Ct value which indicated a low viral load, positive serology test result on 4 April, as well as negative pre-departure test taken on 31 March. He was discharged from the hospital on 6 April, without the need for further isolation as he was deemed to have been shedding minute fragments of the virus RNA, which were no longer transmissible and infective to others. 

On 17 April, as he had been identified as a close contact of Case 62045, he was tested for COVID-19 and his test result came back positive. His serology test result is also positive. The Ct value of his polymerase chain reaction (PCR) test taken on 17 April was lower than his test done on 2 April, indicating a higher viral load this time. His antibody titres are also currently very high, suggesting that he was exposed to a new infection which boosted his antibody levels. MOH, in consultation with an expert panel which comprises infectious diseases and microbiology experts, has assessed that he was likely to have been re-infected with COVID-19 recently. Our epidemiological investigations indicate that Case 61536 was probably re-infected when he was in India, and had been infectious when he returned to Singapore. He then passed the infection to Cases 62045 and 62143.

With the emergence of new variants of concern around the world, we will closely monitor for re-infection of recovered COVID-19 cases, and are reviewing our border measures for recovered travellers. Similar imported cases suspected of re-infection will be isolated and undergo repeat COVID-19 PCR tests to monitor the trend of their viral loads, to ensure that such cases are detected promptly.

 b)            Cases residing in dormitories: 1

There is 1 case residing in a dormitory today who is currently unlinked.

Case 62181, a 35 year-old male Bangladesh national, is a Work Permit holder who arrived in Singapore in July 2019. He is employed by Prosper Environmental & Engineering Pte Ltd as a construction supervisor, and works at Sembcorp Marine Admiralty Yard (60 Admiralty Road West). He resides at Westlite Woodlands Dormitory (2 Woodlands Sector 2).

He developed a runny nose on 16 April but did not report his symptom. On the same day, he was tested for COVID-19 as part of Rostered Routine Testing (RRT). His pooled test result came back positive for COVID-19 on 18 April, and he was immediately isolated and conveyed to the National Centre for Infectious Diseases in an ambulance. An individual test was done on 18 April, and his test result came back positive for COVID-19 infection the next day. His earlier tests from RRT – the last being on 9 April – were all negative for COVID-19 infection. His serology test result has come back positive but we have assessed that this is likely a current infection.

Case 62181 received his first dose of COVID-19 vaccine on 12 March, and the second dose on 13 April. This likely accounts for his positive serology test result as he has produced antibodies following vaccination. However as it typically takes a few weeks for an individual to build up immunity after completing vaccination, he was likely to have been infected before he was conferred protection after vaccination.

Epidemiological investigations are in progress. In the meantime, all the identified close contacts of the case, including his dormitory and workplace contacts, have been isolated and placed on quarantine, and will be tested at the start and end of their quarantine period so that we can detect asymptomatic cases. We will also conduct serological tests for the close contacts to determine if the case could have been infected by them.

 c)            Imported cases: 13

 Amongst the 13 imported cases,

 •             1 (Case 62183) is a Singaporean and 2 (Cases 62179 and 62180) are Singapore Permanent Residents who returned from India and the Philippines.
•             1 (Case 62191) is a Dependant’s Pass holder who arrived from Sri Lanka.
•             4 (Cases 62178, 62182, 62185 and 62187) are Work Pass holders who arrived from India and Malaysia.
•             4 are Work Permit holders who arrived from Bangladesh, India and Myanmar, of whom 1 (Case 62188) is a foreign domestic worker.
•             1 (Case 62177) is a Short-Term Visit Pass holder who arrived from India to visit her family member who is a Singaporean.

 They had all already been placed on SHN upon arrival in Singapore and were tested while serving SHN.

 4.            Please refer to the Annexes and MOH’s daily Situation Report ( for details.

Update on condition of confirmed cases

5.            37 more cases of COVID-19 infection have been discharged from hospitals or community isolation facilities. In all, 60,540 have fully recovered from the infection and have been discharged from hospitals or community care facilities.

6.            There are currently 74 confirmed cases who are still in hospital. Of these, most are stable or improving, and 1 is in critical condition in the intensive care unit. 221 are isolated and cared for at community facilities. These are those who have mild symptoms, or are clinically well but still test positive for COVID-19. 30 have passed away from complications due to COVID-19 infection.

20 APRIL 2021

[1] Case 62045 is a 41 year-old female Singapore Permanent Resident (PR) who works as an accountant at OM Universal Pte Ltd and was confirmed to have COVID-19 infection on 16 April.

[2] Case 62143 is a 44 year-old male PR who is the spouse of Case 62045. He works as a manager at Spice Grill Restaurant and Rangoon Bar & Bistro. He was confirmed to have COVID-19 infection on 18 April.