breaking news2:39 PM PT -- Paul's rep just released a statement, saying Paul will be fine.
The rep says, "Since contracting a virus last week that led to the postponement of tour dates, Paul received successful medical treatment at a hospital in Tokyo. He will make a complete recovery and has been ordered to take a few days rest."
Sir Paul McCartney is so ill he has to cancel the rest of his "Out There" tour dates for Japan and South Korea.
The 71-year-old ex-Beatle already canceled a concert Tuesday due to a viral infection which keeps getting worse. Doctors have reportedly ordered him to get "complete rest" -- and a Tokyo newspaper say he's been hospitalized, but doesn't specify where.
We've reached out to Paul's reps ... so far no word back.
Sir Paul is scheduled to begin a U.S. tour, in mid-June.