Illinois Sen. Mark Kirk has left the Chicago hospital where he was treated after his stroke last month and has been transferred to a rehabilitation center.

Dr. Richard Harvey of the Rehabilitation Institute of Chicago says a team of experts will spend the next few days assessing the 52-year-old Republican's condition. They will also design a rehabilitation program for him.

The doctor said Friday that Kirk's good general health and fitness level before his stroke will work in his favor as he recovers.

On Tuesday, the senator's neurosurgeon said swelling in Kirk's brain had subsided and a portion of his skull that had been removed was reattached.

The stroke is expected to affect movement on the left side of Kirk's body.