Is hand washing better than using hand sanitizer for preventing viruses?

The Importance of Hand Washing

Hand washing is one of the most effective ways to prevent the spread of viruses and other microorganisms. According to the World Health Organization (WHO), washing your hands with soap and water is 99% effective in removing norovirus, a common cause of gastrointestinal illness. When washing your hands, make sure to use warm water, apply enough soap to cover your hands, and scrub for at least 20 seconds. This involves washing the backs of your hands, between your fingers, and under your nails.

The Limitations of Hand Sanitizer

While hand sanitizer can be effective against some types of viruses, it is not a substitute for hand washing. Hand sanitizer works by killing germs on the skin’s surface, but it may not be able to reach all areas of the skin, particularly between fingers and under nails. Additionally, hand sanitizer may not be effective against norovirus, influenza, and other viruses that can cause severe illness. Hand sanitizer typically contains 60-95% ethanol or 70% isopropanol, which can be effective against many types of germs, but it may not be as effective as hand washing in removing dirt and other contaminants from the skin.

Best Practices for Hand Hygiene

To maximize the effectiveness of hand washing, make sure to wash your hands frequently, especially after using the bathroom, before eating, and after blowing your nose, coughing or sneezing. Use a hand sanitizer when soap and water are not available, but make sure to choose a product that contains at least 60% ethanol or 70% isopropanol. When choosing a hand sanitizer, look for a product that is specifically designed to kill norovirus, influenza, and other viruses that can cause severe illness.