HBO said Maher is fully vaccinated and asymptomatic after testing positive during the premium cable network's weekly PCR testing ahead of Friday's live taping. Maher was scheduled to interview astrophysicist Neil deGrasse Tyson, Hardcore History podcast host Dan Carlin and World War Z author Max Brooks. “The Friday, May 14th taping of Real Time with Bill Maher has been cancelled," said an HBO spokesperson. "Bill tested positive during weekly staff PCR testing for COVID. He is fully vaccinated and as a result is asymptomatic and feels fine. Real Time production has taken every precaution following COVID CDC guidelines. No other staff or crew members have tested positive at this time. The show will be rescheduled at a later date."