Legendary singer/songwriter Rod Stewart has a nasty throat infection, RadarOnline.com can reveal exclusively, that has forced him to cancel several U.S. concert dates.

"Rod Stewart has a throat infection and went to the doctor who prescribed antibiotics and 4 days of complete vocal rest. Ignoring the doctor's advice, he attempted to go through his normal warm ups yesterday but it was impossible," Stewart's rep tells us.

"Particularly frustrating, is that he had to cancel the last show of a 16 date run."

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• Throat Infection