Dozens of guests at a top-rated Danish restaurant were recently hit with a stomach virus that causes vomiting and diarrhoea, dpa cited the Danish Food Administration as saying on Friday. \'We are really sorry,\' said Peter Kreiner, chief executive of Noma, which has two Michelin Stars and has been named the world\'s best restaurant for the last three years by Britain\'s Restaurant magazine. An employee who did not show symptoms associated with the stomach bug, also known as gastroenteritis, was the likely carrier of the virus.