[yorwba]

> If getting vaccinated reduced your odds of spreading the virus by 90%, and 92% of the population were double-vaccinated, then the majority of the spread would be...

> Among, and by the double-vaccinated. (8.28% vs 8%)

I don't know how you're getting those numbers.

If baseline spread is 100% unvaccinated spreading to 100% unvaccinated, then 92% vaccinated spreading 10% to 92% vaccinated amounts to 8.464% of baseline, 92% vaccinated spreading 10% to 8% unvaccinated is 0.736% of baseline, 8% unvaccinated spreading to 92% vaccinated is 7.36% of baseline and 8% unvaccinated spreading to 8% unvaccinated is 0.64% of baseline. The total sums to 17.2% of baseline, of which vaccinated to vaccinated spread amounts to 49.2%.

(It's not terribly important since the numbers are made-up anyway, but I'd like to know whether I made a mistake somewhere.)