26-01-2022, 05:06 PM
More than 3,500 people who tested positive between January 5 and January 20 answered this question, and almost two-thirds (64.5 per cent) said they had previously tested positive for coronavirus.
https://sg.yahoo.com/news/two-thirds-peo...36075.html
https://sg.yahoo.com/news/two-thirds-peo...36075.html