What is the recommended procedure for handwashing in the field?

The recommended procedure for handwashing in the field emphasizes the use of soap and clean water for at least 20 seconds. This method is crucial for effectively removing dirt, bacteria, viruses, and other pathogens from the hands. The mechanical action of scrubbing combined with the cleansing properties of soap helps ensure that contaminants are dislodged from the skin. Clean water is also vital because it prevents recontamination of the hands, which could happen if contaminated water is used.

Establishing a duration of 20 seconds is based on studies showing that this time frame significantly reduces the presence of microorganisms on the hands. It allows sufficient time for thorough cleaning, especially in areas that are often overlooked, like between the fingers and under the nails.

In contrast, using hand sanitizer alone may not be adequate in certain situations, especially when hands are visibly soiled. Scrubbing hands for at least 10 seconds is also insufficient, as it does not meet the recommended duration for effective hygiene. Rinsing hands in contaminated water poses severe risks, as it can lead to reinfection and the spread of diseases. Therefore, the practice of washing hands with soap and clean water for at least 20 seconds is the most effective strategy for hygiene and disease prevention in field settings.