Viruses can live on surfaces for up to three days, according to professors from Princeton and the University of Los Angeles. If you’re picking up harmful bacteria then sitting down to work, it doesn't matter if you wash your hands throughout the day: you're picking up the same bacteria from your keyboard all over again.
You could even leave the office Friday, walk back in on Monday and find the same bacteria waiting for you. Yes, this includes the virus we're all currently worried about.
