We have a COVID app put out by the government of Canada that you download to your phone and it signals when you are close to a person who has been diagnosed with COVID .
Yes a lockdown is devastating economically . You have to find a balance between health and economics . I don't know what that balance is .
They are only imposing stiff restrictions in areas that are bad like the city of Montreal , rather than the entire province this time . Some restrictions are rather extreme . People don't like restrictions , especially when the politicians who impose them don't adhere themselves , There is a certain amount of hypocrisy
No of course i don't trust China . They do "appear " to be pretty much rid of COVID 19 . People listened to the rules there , they kind of had no choice if you know what i mean . Life is pretty much back to normal there , for now at least.
Maybe if we all did it right the first time things would be normal here now too . :)