In this Tuesday, Nov. 17, 2015, file photo, actor Charlie Sheen appears during an interview on NBC's "Today" show in New York, saying he tested positive four years ago for the virus that causes AIDS. A new study released Monday, Feb. 22, 2016, found that Sheen's revelation prompted the greatest number of HIV-related Google searches recorded in the United States since 2004. (Peter Kramer/NBC via AP)
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