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Citation From the March 27, 2020, edition of Fox News' Tucker Carlson Tonight 

TUCKER CARLSON (HOST):  Doctor, may I -- I'm sorry. I just have to ask you this question, and my producer is looking this up. The physician we just spoke to is practicing in the city. We just interviewed him. You probably saw it. He said that he hasn't been infected and he is grateful, but he is taking a prophylactic, a medicine to protect him from being infected. He gave a brand name. I didn't recognize it. Apparently, it's hydroxychloroquine, another name for that. Does that surprise you that he is taking that?

DR. MARC SIEGEL (FOX NEWS MEDICAL CONTRIBUTOR):  No, the name you're talking -- the name you're talking about is Plaquenil. Well, that's another name for hydroxychloroquine.

CARLSON: Exactly.

SIEGEL: A lot of people feel that this is an extremely effective drug at decreasing the viral spread, especially early in the course. What is lacking are substantial clinical trials, but a lot of people are using this and it's very promising. I've talked to some top rheumatologists today that use it regularly in their practice. It absolutely has antiviral properties against this virus.

CARLSON: That's just -- it's just absolutely fascinating. My producer caught that, I didn't, because I didn't recognize the name. But I'm glad to know that and thank you for confirming it. Dr. Siegel, good to see you.