The public is getting mixed, confusing, and deceptive messages from the WH, Trump's team, and other officials.
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The debate rules called for everyone to be tested BEFORE the debate. However, the Trump entourage showed up too late and no one was tested. The debate organizers relied on the honor system to allow the debate to go on as scheduled. ("Honor system" and Trump?  Sounds like a disaster in the making already.)
http://www.businessinsider.com/donald-trump-chris-wallace-presidential-debate-coronavirus-2020-10
Chris Wallace said Trump arrived too late to be tested for coronavirus at the first presidential debate
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Trump knew that he was exposed to COVID positive Hope Hicks and went to the Bedminster fund raisers and other meetings anyway.  
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DID TRUMP KNOW THAT HE WAS COVID POSITIVE BEFORE THE DEBATE AND DELIBERATELY ARRIVE LATE TO AVOID BEING TESTED? (Or was he tending to a national emergency watching Fox news that legitimized his tardiness?)  Was Trump trying to avoid an announcement to the multi-million person audience to the conglomerate multi-outlet (Fox, CNN, NBC, CBS, Reuters, PBS, C-Span, ...) broadcast that "DEBATE CANCELED DUE TO TRUMP TESTING COVID POSITIVE."?  
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At least 11 (mostly) out of state people (news, media) working at the debate have tested COVID positive after the event.  
http://www.dailymail.co.uk/news/article-8800389/Chris-Wallace-Donald-Trump-family-arrived-debate-venue-late-COVID-19-test.html
"Eleven who worked on Cleveland debate are diagnosed with COVID as Chris Wallace says Donald Trump and his family arrived too late for tests and refused to wear face masks and Fox News stars including Lachlan Murdoch are now being tested"
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"... 'There was an honor system when it came to the people who came into the hall from the two campaigns,' Wallace said. ..." "The gathering included two of [Fox]'s news anchors, Bret Baier and Martha MacCallum, along with the chief executive of Fox News Media, Suzanne Scott, and its president, Jay Wallace. Sean Hannity is also being tested, after he broadcast live from within the debate hall and conducted a live interview with the president's son, Donald J. Trump Jr, who sat only a few inches away from Hannity.  Other Fox News personalities were on a set outside the venue, including the political analysts Brit Hume, Dana Perino, and Juan Williams. FOX NEWS DECLINED TO COMMENT ON  FRIDAY."
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DID TRUMP KNOW BEFORE THE DEBATE? I think that people infected at the debate have a case to subpoena test results as a part of deciding whether to file assault charges.