Madonna has postponed her ‘Celebration’ world tour after being hospitalised in intensive care due to a bacterial infection.The pop icon was supposed to embark on a massive 40th anniversary ‘Celebration’ tour next month, which would have kicked off in Vancouver, BC on July 15. Other stops in North America included New York, Chicago, Miami, Washington, Houston, Los Angeles, Las Vegas and other cities up until early October when the dates hit the London and various cities in Europe.Now, a statement from Madonna’s manager Guy Osears reads: “On Saturday, June 24, Madonna developed a serious bacterial infection which lead to a several-day stay in the ICU.