Norovirus is transmitted via person-to-person or food and water contaminated by the virus. It is believed to be the most common cause of viral gastroenteritis in the community.

• 诺沃克类病毒感染经人传人,或食用或饮用受病毒污染的食物或水所致,相信为引致社区病毒性肠胃炎的最常见原因。