Sheen's personal life has made headlines, including reports of alcohol and drug abuse and marital problems, as well as allegations of domestic violence. In March 2011, his contract for "Two and a Half Men" was terminated by CBS and Warner Bros. following his derogatory comments about the series' creator, Chuck Lorre. On November 17, 2015, Sheen publicly revealed that he is HIV positive, having been diagnosed four years previously. The disclosure resulted in a vast increase of online search queries for HIV prevention and testing, which was later dubbed the ""Charlie Sheen effect"".