What is a key requirement of effective hand hygiene in healthcare?

• A. Hand hygiene is optional in most settings
• B. Proper handwashing with soap and water or sanitizer for at least 20 seconds and thorough drying
• C. Only use sanitizer, never soap and water
• D. Hand hygiene only prevents viral infections

Answer: (B)

Effective hand hygiene relies on thoroughly removing or killing pathogens on the hands through proper cleaning and drying. You can achieve this with soap and water or with an alcohol-based hand sanitizer. The guidance emphasizes cleaning for at least 20 seconds, covering all surfaces, and then drying completely. If hands are visibly dirty or contaminated, soap and water is preferred; sanitizer works well in most other situations when you apply enough product and rub until hands are dry.

This approach matters because mechanical action (friction) helps remove microbes, while sufficient contact time ensures the sanitizer or soap is effective. Thorough drying prevents residual moisture from aiding microbial transfer.

Choosing not to perform hand hygiene isn’t appropriate in healthcare, and relying only on sanitizer is not sufficient when hands are visibly soiled or when dealing with certain pathogens. Hand hygiene protects against a wide range of infections, not just viral ones.