Gunaratnam, Praveena Use of a prohibition order after a large outbreak of gastroenteritis caused by norovirus among function attendees. [electronic resource] - Western Pacific surveillance and response journal : WPSAR Apr 2012 - 10-5 p. digital Publication Type: Journal Article ISSN: 2094-7321 Standard No.: 10.5365/WPSAR.2012.3.1.008 doi