https://en.wikipedia.org/wiki/Nazi_concentration_camp_badge

For one more reason to draw on concentration camp badges for the illustration of coronavirus, notice the 222 overlap.

And for another, the camps came out of World War II, which the coronavirus outbreak has been compared to.

Read more about the CDC Illustrators who invented the coronavirus image:  https://gematriaeffect.news/alissa-eckert-dan-higgins-the-cdc-illustrators-of-the-viral-coronavirus-image-more-56-and-201/