Source of infection: more light patients or asymptomatic carriers.
传播途径：诺如病毒环境抵抗力强、感染力强、传播途径多样。传播途径包括人传人、经食物和水传播。可通过污染的水源、食物、物品、空气飞沫等传播。
Transmission route: norovirus environment strong resistance, infectious, transmission route is diverse. Transmission routes include human-to-human, food and water transmission. It can be spread by contaminated water, food, articles, air droplets, etc.
易感人群：主要为学龄儿童及成人，易在学校、幼儿园、社区、餐馆、养老院等集体场所暴发。
Susceptible groups: mainly for school-age children and adults, easy to outbreak in schools, kindergartens, communities, restaurants, nursing homes and other collective places.
What should I do if I get norovirus?
1、对抗生素、抗病毒药物说“NO”。对于诺如病毒感染，目前没有特效药。诺如是病毒，如果滥用抗生素，还可能伤害肠道的正常菌群，从而加重腹泻。
1. Say "NO" to antibiotics and antiviral drugs. There is currently no specific drug for norovirus infection. Norovirus, if abused, can also harm the normal flora of the gut, which can aggravate diarrhea.
2、针对症状及时就医。注意补水，切记不要脱水。如果没有出现脱水症状，精神食欲都好，可以到医院口服补液盐；出现脱水症状时及时就诊输液。
2. Seek medical advice in time for symptoms. Pay attention to water, remember not to dehydrate. If no dehydration symptoms, good spirit and appetite, can go to the hospital oral rehydration salts; Seek medical advice when dehydration occurs.
3、勤洗手，防范交叉感染，尽量不去公共场合。症状消失后的3天以内，身上携带的病毒仍然具有传播力。因此在痊愈后的3天最好不要去人群聚集的地方，以免造成病毒的再次传播。
3, wash hands frequently, prevent cross-infection, try not to go to public places. Within three days after symptoms disappear, the virus remains transmissible. Therefore, it is best not to go to the place where people gather for 3 days after recovery, so as not to cause the virus to spread again.
4、多开窗通风。孩子的房间要开窗通风或使用排气扇，保持室内空气流通。
4. Open more Windows for ventilation. Open a window or use an exhaust fan in your child's room to keep air circulating.
5、消毒污染物。 呕吐物附近任何表面都应快速用1000mg/L的消毒液清洗或喷洒，衣服、毛巾、桌布和餐巾等物品沾染呕吐物或粪便时用高温清洗。
5. Disinfect pollutants. Any surface near the vomit should be quickly cleaned or sprayed with 1000mg/L disinfectant, and clothes, towels, tablecloths and napkins should be cleaned at high temperature when contaminated with vomit or feces.