Musician Elton John (L) and his husband David Furnish pose at the 2014 Elton John AIDS Foundation Oscar Party in West Hollywood, California March 2, 2014. REUTERS/Gus Ruelas
Britain's Prince Harry greets Elton John after the Royal Variety Performance at the Albert Hall in London, November 13, 2015. REUTERS/Paul Hackett - RTS6W6Z
Singer Elton poses at his 70th Birthday and 50-Year Songwriting Partnership with Bernie Taupin event, benefiting the Elton John AIDS Foundation and the UCLA Hammer Museum at RED Studios Hollywood in Los Angeles, March 25, 2017.
Britain's Elton John checks page layout in the newsroom at The Independent newspapers editorial offices in London November 30, 2010. John is the guest editor of the special World Aids Day edition of the British daily paper due out on Wednesday. REUTERS/Dylan Martinez
British singer Elton John performs during his concert at the Chavon Amphitheater in La Romana, February 28, 2014. REUTERS/Ricardo Rojas
Musician Elton John performs at the Rose Hall at Columbus Circle in New York City as part of a Fashion Rocks pre party and for the debut of his new album "Captain & the Kid" September 6, 2006. REUTERS/Eric Thayer
Elton John performs with Lady Gaga (not shown) at the 52nd annual Grammy Awards in Los Angeles January 31, 2010. REUTERS/Mike Blake
Singer Elton John performs at the Hillary Victory Fund "I'm With Her" benefit concert for U.S. Democratic presidential candidate Hillary Clinton at Radio City Music Hall in New York City, March 2, 2016. REUTERS/Mike Segar/File Photo - RTST07L
Elton John celebrates his 60th birthday and 60th Madison Square Garden performance in New York March 25, 2007. REUTERS/Eric Thayer
Lady Gaga and Elton John arrive at the Vanity Fair Oscar Party in Beverly Hills, California February 28, 2016. REUTERS/Danny Moloshok - RTS8IO8
Singer Elton John (C) appears onstage during the curtain call of the Australian premiere of the musical "Billy Elliot" in Capitol theatre in Sydney December 13, 2007. REUTERS/James Morgan/Pool
Sir Elton John receives an Honorary Doctorate from the Royal Academy of
Music at the Academy's 2002 graduation ceremony, London, July 3, 2002.
This is the first time in the Academy's 180 year history that Honorary
Doctorates have been awarded. REUTERS/Peter Macdiarmid
PM/CLH/ - RTRAMPJ
Singer Elton John, founder of the Elton John AIDS Foundation, arrives to testify before a Senate Appropriations State, Foreign Operations and Related Programs Subcommittee hearing on global health problems in Washington May 6, 2015. REUTERS/Carlos Barria - RTX1BTP0
British pop star Elton John (R) and David Furnish laugh at the Guildhall in Windsor, southern England, after their civil ceremony December 21, 2005. John tied the knot with long-term partner Furnish on Wednesday, joining hundreds of gay couples in England taking advantage of a new law to formalise their relationships. REUTERS/Kieran Doherty - RTR1BF9Y
Singer Elton John greets guests during his Elton John AIDS Foundation’s 15th Annual "An Enduring Vision Benefit" in New York City, U.S., November 2, 2016. REUTERS/Brendan McDermid - RTX2RMRG
Singer Elton John (L) greets Democratic presidential candidate and U.S. senator Hillary Clinton (D-NY) and former President Bill Clinton (R) as he takes the stage at a fundraising concert for Clinton's campaign at New York's Radio City Music Hall April 9, 2008. REUTERS/Mike Segar
British singer Elton John (R) and guitarist Davey Johnstone perform during a concert as part of the singer's "Greatest hits Live 2012" world tour at the Ondrej Nepela arena in Bratislava July 10, 2012. REUTERS/Radovan Stoklasa
British singer Elton John performs during the Rock in Rio Music Festival in Rio de Janeiro, Brazil, September 20, 2015. REUTERS/Ricardo Moraes TPX IMAGES OF THE DAY - RTS22TU
Elton John battles deadly infection
Elton John spent two nights in intensive care with a potentially deadly bacterial infection and has canceled all his concerts for the rest of April and May.