https://www.channel4.com/news/great-...f-devi-sridhar

My interpretation of the first part of this is that circuit break is not just about how the virus is acting but how prepared the systems (hospital capacity, testing capacity, tracing effectiveness, mask availability etc.) are in place to respond. If systems are moving towards stress point, the evidence that virus is spreading at a rate where action needs to be taken comes two weeks later when stress on systems has progressed also.

"Where is the evidence?" can be used a political message, and is currently being used by Keir Starmer.