Case 40 is a 36-year-old male Singapore citizen with no recent travel history to China.

He reported onset of symptoms on 30 January, and had visited a GP clinic on the same day. As he works at Yong Thai Hang (24 Cavan Road), he was identified as a close contact of Cases 19 and 20, and placed under home quarantine on 4 February. He was admitted to NCID on 7 February. Subsequent test results confirmed 2019-nCoV infection on 8 February morning.

Prior to hospital admission, he went to work at Yong Thai Hang and stays at Bedok North Street.