Singlecare: Can hand sanitizers or hand-washing kill the flu?

New research examines what is more effective against the flu: hand sanitizer or hand washing. The study found that when the flu virus is trapped in wet mucus, it can remain infectious for up to four minutes after exposure to hand sanitizer—in other words, much longer than you might have guessed. According to the study, hand-washing—even without soap and even when the infected mucus was wet—was, indeed, very effective in removing the flu virus. It eliminated it in just 30 seconds.