If you’re going to Worldcon, now’s about the time you should get a Covid booster shot to make sure it’s as effective as possible while you’re there.

Coronavirus Animate The Vax GIF

ALT: Coronavirus Animate The Vax GIF

If you get a vaccine dose now, you’ll be at peak immunity in four weeks. The more people have better immunity, the less transmission during the con. That’s good for everyone. Doesn’t replace masking. But reinforces it.