Singapore, April 4 -- I last spoke to you on Covid-19 three weeks ago. Since then, the number of new cases daily has begun to rise.
We used to see fewer than 10 new cases a day. But in the last two weeks, despite our best efforts, we have routinely had more than 50 new cases daily.
Initially, many of the new cases were imported from overseas, mostly returning Singaporeans. Then last week, we began to have more local cases. Furthermore, despite our good contact tracing, for nearly half of these cases, we do not know where or from whom the person caught the virus.
This suggests that there are more people out there who are infected, but who have not been identified. And they may be passing the virus unknowingly to others.
In the last f...