How to effectively manage norovirus outbreaks in schools?

Hi Doctor, Norovirus outbreaks seem to be a recurring issue, especially in crowded environments like schools, hospitals, and nursing homes. I work in a school and have seen firsthand how quickly this virus spreads among students and staff. What are the most effective ways to prevent norovirus outbreaks in schools and other public places? I have read that handwashing is crucial, but are there any specific sanitizers or disinfectants that are more effective? Since alcohol-based hand sanitizers are not very effective against norovirus, what alternatives would you recommend? Additionally, how long does norovirus survive on surfaces, and what is the best way to properly disinfect areas where an outbreak has occurred? Should schools implement any special policies, such as keeping children home for a certain number of days after symptoms resolve, to reduce transmission? I am also interested in whether there are any advancements in norovirus vaccines. Since the virus has multiple strains, is there progress in developing a vaccine that provides broad protection? I would appreciate any expert advice on controlling norovirus spread in schools and similar settings.