I wear medical mask if I happen to be around people, in indoor settings or are you saying it's likely one could get infected outdoors otherwise?

There probably is some sort of hole which I'm not considering and it's mainly unknowns why I even believe it to be 1%. If there were no holes I'd believe it to be near 0%.

There's people who go to office, are around other people 40+ hours a week, then come to home to large families, have children that went to school. Offices, schools, things like these probably have the most spread.

Even with a vaccine that has 90% efficacy for preventing infection they would be exposed to the virus more than 10x that I am, and so would have higher chance of getting infected.

I know some studies calculated efficacy from hours spent in a high risk situation.