Which type of preventative measure is most effective against Norovirus?

Avoiding contact with infected individuals is the most effective preventative measure against Norovirus because this virus is highly contagious and spreads easily through direct person-to-person contact. Norovirus can also be transmitted through contaminated surfaces, food, and water, making it crucial to limit exposure to those who are infected. By maintaining distance from infected individuals, you significantly reduce the risk of transmission.

While other options may provide some level of protection, they are not as effective alone. For example, alcohol-based hand rubs can help reduce the spread of some pathogens but are not effective against Norovirus; frequent handwashing with soap and water is recommended instead. Consuming only bottled water might mitigate the risk of waterborne transmission, but does not protect against person-to-person contact. Implementing air filtration systems can improve air quality but does not directly address the primary transmission routes for Norovirus. Therefore, avoiding contact with those who are infected stands out as the most effective strategy for prevention in the context of this virus.