Flint

Flint is the largest city and seat of Genesee County, Michigan, that became the fifth designated PRT Quarantine Zone in the United States.

History
At some point before the start of Worm, a cape appeared that made people in their vicinity develop Corona Pollentias and trigger. They created a villain group, but the group turned against them and literally carved the cape up while making sure they were kept alive. The gang members then took their 'pounds of flesh' to develop powers in select victims, force-inducting them into their villain group.

Presumably, the situation is still dangerous enough to warrant an ongoing Quarantine Site up until Gold Morning.

For unknown reasons, the situation in Flint was redacted from PRT files. It, likely, was a Cauldron-made decision, to prevent formation of infection hypothesis for triggers, which would inevitably lead to moral panic and witch-hunts.