SINGAPORE - A 72-year-old Singaporean man, who works as an aviation screening officer at Changi Airport Terminal 1, is among the three new Covid-19 unlinked community cases reported on Saturday (Jan 30). He developed a cough and sore throat on Monday, the day he received his first dose of the Pfizer-BioNTech vaccine, but he did not seek medical treatment. His job involves screening the baggage of arrival passengers via X-ray scanners, and directing passengers to the baggage screening lines. On Wednesday, he went to work and was tested as part of rostered routine testing (RRT), and his test results came back positive the next day.