At least 49 people have died after Typhoon Damrey slammed into central Vietnam, disaster officials said Monday, as heavy flooding cast doubt on a planned retreat for APEC leaders' spouses to the ancient town of Hoi An.The weather system hit just days before Vietnam welcomes world leaders to the APEC summit in Danang and has left several areas totally submerged in the worst flooding in years.While Danang itself has not been seriously affected, heavy flooding has hit Hoi An, a UNESCO World