Evidence-Based: Is Trump Immune to COVID?

President's physician reported that Trump is "no longer considered a transmission risk to others" according to "recognized standards" in his memo. Meanwhile, Trump tweeted it is "very nice to know" that he "can't get it, can't give it". In an interview with Fox News, he mocks at Biden for having to "hide in his basement" because of Biden's lack of immunity to COVID. But is Trump really surrounded by the protective glow? What do Trump's prescriptions tell us about Trump's condition? Does "decreasing viral load" in Trump's system mean immunity to the virus?