Other viruses have a fat-based outer layer called called an envelope, which is more easily broken down by alcohol-based hand sanitizers. Norovirus, on the other hand, is a non-enveloped virus.

Other viruses have a fat-based outer layer called called an envelope, which is more easily broken down by alcohol-based hand sanitizers. Norovirus, on the other hand, is a non-enveloped virus.

Hand sanitizer alone isn't enough to protect you from norovirus, experts say. So it's important to know how to stay safe and wash your hands properly.

Other viruses have a fat-based outer layer called called an envelope, which is more easily broken down by alcohol-based hand sanitizers. Norovirus, on the other hand, is a non-enveloped virus.

Other viruses have a fat-based outer layer called called an envelope, which is more easily broken down by alcohol-based hand sanitizers. Norovirus, on the other hand, is a non-enveloped virus.

Other viruses have a fat-based outer layer called called an envelope, which is more easily broken down by alcohol-based hand sanitizers. Norovirus, on the other hand, is a non-enveloped virus.

Other viruses have a fat-based outer layer called called an envelope, which is more easily broken down by alcohol-based hand sanitizers. Norovirus, on the other hand, is a non-enveloped virus.

As the norovirus outbreak continues to spread in the U.S., you can't rely on hand sanitizer alone to protect you. Norovirus, also sometimes called the "winter vomiting disease," causes ...