你很情绪化啊She tested negative for the coronavirus on arrival on March 2 and when her swab was done on March 15 during her SHN. She later tested positive after a pre-departure test on March 20 in preparation for a trip to Indonesia. https://www.straitstimes.com/singapore/singaporean-woman-who-tested-negative-for-covid-19-during-shn-later-tests-positive