George Michael is being treated in the Austrian capital Vienna and cared for by medics in a private house after he was hospitalized for one day, being diagnosed with pneumonia.

According to friends, George Michael, 48, is responding “well” to treatment.

As a result, George Michael was yesterday forced to cancel a number of dates on his Symphonica tour, including last night’s show in Strasbourg, France and two planned concerts in Cardiff this weekend.

A statement yesterday afternoon said: “Singer George Michael has been forced, to postpone the Cardiff dates (26th and Sunday 27th of November) of his Symphonica tour due to illness.

“The singer recently postponed tour dates in Vienna and Strasbourg under doctor’ s orders after being diagnosed with pneumonia and he is currently receiving treatment.”

Plans to reschedule the dates would be provided when available.

George Michael is being treated in the Austrian capital Vienna and cared for by medics in a private house after he was hospitalized for one day, being diagnosed with pneumonia

Another statement on George Michael’s website said the singer was cancelling the Cardiff concerts with “great regret” due to his “ongoing illness”.

George Michael’s aides dismissed claims in the Austrian media that the singer was also suffering from heart problems.

“He got ill, it’s very cold in that part of Europe, and then he got pneumonia. He’s responding well to treatment, very good. But he has to rest. He’s got to let this illness run its course.”

Friends were unsure how long George Michael would have to stay in Austria.

George Michael has also been conspicuously absent from his Twitter. The star – who has become voracious in Tweeting in recent months – has not Tweeted since November 17.

Concert promoter Manfred Leodolter said yesterday: “George Michael is still in Vienna.

“He has cancelled his next few shows including tonight’s [wed] show in Strasboug, France. Doctors have warned him for the moment against flying and he is getting rest in Vienna.”

George Michael was forced to postpone his gig in Vienna on Monday, just two hours before the show. Promoters, initially, said it was due to a throat infection.

The latest cancellations come after George Michael had to call off one of his concerts at the Royal Albert Hall in central London suffering from a viral infection. That concert was yesterday rescheduled for next May.