Final answer:
The CDC advises scrubbing with soap for at least 20 seconds during handwashing, using proper technique to cover all parts of the hands, particularly after exposure to contaminants or before handling food.
Step-by-step explanation:
The CDC recommends that for effective handwashing, one should scrub their hands for at least 20 seconds. Proper hand hygiene is critical in reducing the spread of pathogens. When washing hands, the process should consist of several steps to ensure that all parts of the hands are thoroughly cleaned.
To properly wash your hands, first wet them with clean, running water. Next, apply soap and lather your hands by rubbing them together. Make sure to cover all areas, including the back of your hands, between your fingers, and under your nails. After lathering, scrub your hands for at least 20 seconds. A practical timer for this is to hum the "Happy Birthday" song from beginning to end twice. To finish, rinse your hands well under clean, running water and dry them using a clean towel or air dryer. If possible, use a towel to turn off the faucet and open the bathroom door to avoid recontamination of your hands.
The importance of handwashing is amplified in a healthcare setting where workers must wash hands thoroughly between every patient contact, after glove removal, and following exposure to bodily fluids and potentially infectious materials. Surgical scrubbing goes beyond routine handwashing, requiring more extensive procedures to reduce skin microbiota and prevent infection.
In short, routine handwashing with soap and warm running water following the above steps, including a 20-second scrub, is a key practice for preventing illness and the spread of infections.