What is the recommended method for washing hands to prevent infection?

• A. Use cold water and soap
• B. Use soap and water, scrubbing for at least 20 seconds
• C. Use hand sanitizer only
• D. Rinse hands briefly under water

Answer: (B)

The recommended method for washing hands to prevent infection involves using soap and water while scrubbing for at least 20 seconds. This technique is essential because soap helps to break down and remove dirt, grease, and pathogens from the skin. The action of scrubbing enhances the effectiveness of this process, as it allows for the mechanical removal of germs from the surface of the hands.

When hands are washed thoroughly for at least 20 seconds, it ensures that not only are the surfaces of the hands clean, but also that the areas between fingers, under nails, and other harder-to-reach places are properly sanitized. This comprehensive approach significantly reduces the risk of transferring harmful microorganisms that could potentially lead to infections.

Using cold water and soap does not offer the same level of effectiveness as warm water, which can help to better activate the soap. Relying solely on hand sanitizer can be insufficient, especially if hands are visibly dirty or greasy, as sanitizers are not as effective without prior washing with soap and water in those cases. Lastly, rinsing hands briefly under water does not effectively remove germs or contaminants, making it an inadequate method for infection prevention.