Contact tracers then reach out to people who have been exposed and advise them what to do next.
Some states rely on the honor system while others require documentation.
Do this by signing up for the text-based run by the Centers for Disease Control and Prevention.
By sharing your experience with people you know, and helping them get solid information, you can make a real difference in the total vaccination effort.
Some have no shame asking those around them their vaccine status.
Follow me on Twitter RobShmerling.