Here's a news
article discussing the testing problems with too many positive results in Florida: "Hospitals dispute DOH account that labs aren't reporting negative results."
As for misreporting, is there a financial incentive for labs to report cases as positive when they're not? Don't they get paid the same either way?
If there is fraud by labs who submit charges for patients they haven't tested, what's the benefit in reporting them as positive instead of negative? Positive results would be much more liable to expose the fraud.
Does anyone have a copy of the notification someone received? If people who haven't been tested are receiving text messages or other notifications that they're positive, that sounds much more likely to be a phishing or hacking scam.