I'd personally try to emphasize the fact that you actually did not attend the meeting, for instance: Actually, I was planning to attend a meeting yesterday and/but if I had, I would now be in hospital with all those who actually did. Also, the word AVERT doesn't work here, for it means: to prevent, and the whole event was not prevented by your absence. Therefore, avoid or, better still, escape would be much more suitable: Looks like I've escaped a tragedy!
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