A Hilton hotel outside Washington has been closed for a top-to-bottom scrubbing after 15 employees and more than 100 guests were sickened by the highly contagious norovirus, a hotel spokesman said Friday. Hotel officials first heard reports of sick guests Wednesday and contacted Fairfax County health authorities, said Jim Cree, the director of sales and marketing at the hotel near Dulles International Airport. Officials confirmed it was norovirus Thursday night, he said. Full Story