Singapore’s contact tracing of covid19 cases is second-to-none.
https://www.straitstimes.com/singapore/grace-assembly-coronavirus-mystery-solved-mega-cluster-linked-to-2-wuhan-tourists-via-a
There were two mega clusters of covid19 cases that they couldn’t figure out how they were related. One was at Grace Assembly church/Missions Singapore (Jan 19) and the other at a Chinese New Year party (Jan 25). Turns out an asymptomatic tourist couple from Wuhan came to the church on Jan 19. One of the church members got infected by just sitting in the same seat(!!), spread covid19 at the Chinese New Year party on Jan 25. Two people at that party got infected and spread it back to church members (Jan 29-Feb 9). One church woman died. See the fascinating contact tracing diagram in this article.
Where the article ends is not the end of the story. One of those church members is a missionary. He travelled across the world to preach in at least 2 churches in a city. He was asymptomatic. In his wake, 34 people were infected. A few of them ended in icu, one was on a ventilator. How many did this missionary really infect? No one knows. From what I can tell, he’s still alive. They think the original wuhan infectious couple is also alive. Very sobering story.
We were watching Singapore closely before it really blew up in the United States because they have such a good healthcare system. For a long time I posted their meticulous daily testing and contact tracing on this daily thread. The hope was that what they were doing would be a harbinger for how we would do. But little did we know that our CDC would foul up the testing so badly, setting us back for weeks. Many (most?) places are still catching up.