[syhprum (OP)]

Nearly two years ago I fell ill with severe cold like symptoms after the visit from Sweden of my grandson and his young son.
I was incapacitated for two weeks it was not flu no back pains, I know that when the history of Aids/HIV was first traced unrecorded cases were found much earlier than first thought.
I would like to think I have anti bodies against it and I am now immune wistful thinking probably!

[Bored chemist]

Nearly two years ago I fell ill with severe cold like symptoms after the visit from Sweden of my grandson and his young son.
I was incapacitated for two weeks it was not flu no back pains, I know that when the history of Aids/HIV was first traced unrecorded cases were found much earlier than first thought.
I would like to think I have anti bodies against it and I am now immune wistful thinking probably!

Your profile lists your age as 90.
That's probably why you were knocked back by a cold or flu a couple of years ago.

It's likely that  Corvid 19 was around somewhere in China in some animal or other for some time before it got into humans.
It almost certainly wasn't in Sweden..