[ceesharp]

The difference is that in a very short period of time, numerous people can end up with the virus. The diseases you listed are distributed over the year. You don't see thousands of people getting a heart attack in a week in the same area. COVID puts the healthcare system at risk because it is a sudden surge of cases which ends up being overwhelming.

[tinus_hn]

What is the difference with ‘we’re used to it’? The things you describe also apply to the flu, yet no one would consider requiring vaccination cards for that. It just turns out there already are beds for people that get that because we are used to it.

[ceesharp]

The flu doesn't require as many ICU beds. Nor do you need to stay weeks or months in the hospital because you had the flu.