How long should you scrub your hands for, at a minimum? 10 seconds Correct Incorrect 10 seconds 20 seconds Correct Incorrect 20 seconds 30 seconds Correct Incorrect 30 seconds 1 minute Correct Incorrect 1 minute Correct! Wrong! 20 seconds The CDC recommends scrubbing for a full 20 seconds. What song does the CDC recommend humming TWICE while handwashing to properly measure time? "Happy Birthday" Correct Incorrect "Happy Birthday" "Yankee Doodle" Correct Incorrect "Yankee Doodle" "The Alphabet Song" Correct Incorrect "The Alphabet Song" "Mary Had a Little Lamb" Correct Incorrect "Mary Had a Little Lamb" Correct! Wrong! "Happy Birthday" According to the CDC, humming the tune of "Happy Birthday" two times will get you to the recommended 20 seconds of handwashing. Is warm or cold water better for washing hands? Warm is better. Correct Incorrect Warm is better. Cold is better. Correct Incorrect Cold is better. Either is fine. Correct Incorrect Either is fine. Neither — the water should be very hot. Correct Incorrect Neither — the water should be very hot. Correct! Wrong! Either is fine! Warm or cold — they're equally effective, as long as you wash thoroughly! Which method of cleaning your hands gets rid of more germs? Washing them with soap and water Correct Incorrect Washing them with soap and water Using hand sanitizer Correct Incorrect Using hand sanitizer Correct! Wrong! Soap and water The CDC notes that washing your hands with soap and water is more effective because hand sanitizer does not get rid of all germs. Still, hand sanitizer can be a great backup if you don't have access to a sink with clean water. What is the minimum alcohol % that the CDC recommends for hand sanitizers? 50% Correct Incorrect 50% 60% Correct Incorrect 60% 70% Correct Incorrect 70% 80% Correct Incorrect 80% Correct! Wrong! 60% The CDC recommends hand sanitizers with at least 60% alcohol. In which of these situations would you NOT need to wash your hands? After coughing, sneezing, or blowing your nose Correct Incorrect After coughing, sneezing, or blowing your nose After using the bathroom Correct Incorrect After using the bathroom Before eating Correct Incorrect Before eating You'd need to wash your hands in all of these situations Correct Incorrect You'd need to wash your hands in all of these situations Correct! Wrong! You should wash your hands in all of these situations. The CDC lists some other important times to wash your hands here. Is antibacterial soap better? Yes, antibacterial soap is better. Correct Incorrect Yes, antibacterial soap is better. No, plain soap is equally good, if not better. Correct Incorrect No, plain soap is equally good, if not better. Correct! Wrong! You don't need antibacterial soap. The FDA has yet to find evidence that antibacterial soaps are actually more effective at preventing illness. Their overuse may even contribute to antibiotic-resistant bacteria. Which of these is NOT a part of the hand you need to wash? The back of the hand Correct Incorrect The back of the hand Between the fingers Correct Incorrect Between the fingers Under the fingernails Correct Incorrect Under the fingernails You need to wash all of these Correct Incorrect You need to wash all of these Correct! Wrong! You need to wash all of these! According to the CDC, an effective handwashing session involves scrubbing the palms, backs of the hands, between the fingers, and under the nails.