Making sure to frequently give your hands a thorough scrub — with soap and for about as long as it takes to sing the “Happy Birthday” song a couple of times — can significantly cut your chances of catching the flu or other respiratory virus.

Making sure to frequently give your hands a thorough scrub — with soap and for about as long as it takes to sing the “Happy Birthday” song a couple of times — can significantly cut your chances of catching the flu or other respiratory virus.