While I don't agree with the FDA on their response, it seems disingenuous that this article doesn't mention the reason why the program was shut down. It is clearly much riskier to provide individuals with their test results than to collect aggregate data. Consider for example if you gave 1 false negative, and that person then took that false negative as an excuse to return to work -- potentially infecting many more. With aggregate data a few false positives/negatives could throw off the statistics but the standards the tests need to be held to for survey purposes are certainly different than those being used for diagnostic purposes.