I actually don't see the need for a a circuit breaker because the numbers show that infections rates a flattening out and Singapore is well on the way to recovery.
Perhaps they are trying to speed up the process somewhat but in my opinion that would be a mistake as it denies many of the chance of gaining immunity.
My main concern is that all these measures taken to prevent the spread of the virus will come back to bite us if the virus mutates and returns in a more lethal form. It will mean that the death toll will be a lot higher come round 2.
Herd immunity is still the best way to go. The problem is that it has become politically unacceptable to do what is logical.
If the virus mutates, there is no telling whether having had immunity to the previous less lethal version would confer immunity against the more lethal mutated version.
It looks like Singapore is going to have many more cases in the coming weeks. It is spreading more and becoming more difficult to keep up with the contact tracing and isolation.
However......overall deaths from the covid19 virus seem to be very low.
If you want to keep "flattening the curve" it will take 1 to 2 years before everyone has been exposed to the virus and the outbreak has run its course while the hospitals did not get overwhelmed. That's way too long.
I predict that at some time in the next 2-3 months countries will make the decision to bump up hospital capacity with more funding while asking people to wear masks and go back to work.
The narrative will start to change as well. Reporting of new cases will stop. They will report number of deaths from covid19 versus TOTAL number of deaths from all causes in the last 24 hours.
It is cheaper to pay the doctors more, pay for increased numbers of doctors and nurses, pay to build or convert existing facilities to be makeshift hospitals than to shut down the country's entire economy.
This flattening the curve is a medical capacity problem. Shutting down the economy is an easy stop gap measure to reduce the volume load to the medical system but is not sustainable nor economically sensible if prolonged.