By the time Carnival Cruise Lines' Liberty pulls into Port Everglades this weekend from a transatlantic voyage, more than 700 people on board will have been afflicted with a highly contagious, stomach flu-like illness that appears to be norovirus, the cruise line said Wednesday. The outbreak could be the largest reported in recent years by the cruise industry. "It's impossible for now to say what the source is," said David Forney, chief of the cruise ship sanitation program at the national Centers for Disease Control and Prevention. He said it's likely passengers brought the virus with them when they boarded...