NBC's Bob Costas Pulling Out of Olympics Coverage

Both eyes now infected

The infection in Bob Costas's left eye appeared Thursday and spread to his right eye Sunday. When he woke up Tuesday in Sochi, Russia, with both eyes swollen and crusted shut, he told NBC that he could not host that evening's prime-time Olympics broadcast.

"Both eyes were red and angry on Sunday and Monday," Costas said by telephone Tuesday morning. Matt Lauer, who is in Sochi as the co-host of "Today," will fill in.