My impression is that they've been following the science from an excessive distance all along. Perhaps they're afraid of catching science.
The science of Pandemics is dealt with in this video from 2018, I'd posted it before but doubt many have watched the full 53 minutes.
you will see from this that they have been following the science very closely
View: https://www.youtube.com/watch?v=rn55z95L1h8&list=PLhtkwgaSAUtaDFMdfhSvxp_keWgaB16A8&index=4&t=0s