Name at least two common disinfection methods used in healthcare and BEA settings.

• A. Ultraviolet light and ozone generation
• B. Dry heat and cold sterilization
• C. Chlorination (bleach) and alcohol-based hand sanitizers
• D. Sterilization by autoclave and gamma irradiation

Answer: (C)

Disinfection methods in healthcare and BEA settings focus on quickly lowering the microbial load on surfaces and on hands to prevent transmission. Chlorination with bleach is a staple for cleaning environmental surfaces and equipment because it is broadly effective against bacteria, viruses, and fungi when used at the proper concentration and contact time. Alcohol-based hand sanitizers are ubiquitous for hand hygiene; they rapidly reduce microbes on the skin and are convenient between patient contacts, especially against many bacteria and enveloped viruses. They’re especially useful when hands aren’t visibly soiled, and they act fast, though they don’t kill all types of organisms (such as spores) and aren’t a substitute for thorough handwashing when hands are dirty.

Other methods exist (like UV light for room disinfection or ozone-based approaches), but they’re not as universally applied for routine disinfection in everyday practice. Sterilization methods (such as autoclaving or gamma irradiation) remove all forms of life and are used for instruments, not general surface disinfection, which is why they aren’t the best fits for the scenario described.