Covid is so dangerous because you don't know when you're infected. People don't show symptoms for about 10 days after getting covid, and they're infectious long before symptoms appear. By the time you know you're infected with covid, you can easily have given it to someone else - and they could have already given it to another person in turn!
Here in Australia we're dealing with quarantine outbreaks by ring fencing. When we have a confirmed case, we isolate everyone that person has been in contact with, and also isolate everyone they've been in contact with as well. So, one confirmed case -> we lock down hundreds of people. This is the only way we've found to keep outbreaks under control without locking down entire cities.
The policy of only wearing a mask when you feel sick is nowhere near enough to stop you from infecting & potentially killing people.
Here in Australia we're dealing with quarantine outbreaks by ring fencing. When we have a confirmed case, we isolate everyone that person has been in contact with, and also isolate everyone they've been in contact with as well. So, one confirmed case -> we lock down hundreds of people. This is the only way we've found to keep outbreaks under control without locking down entire cities.
The policy of only wearing a mask when you feel sick is nowhere near enough to stop you from infecting & potentially killing people.