top of page
Infection Prevention FAQs
Real-world answers to common infection prevention questions, from hand hygiene to complex NHSN scenarios
Browse by Topic
- 01Because “topping off” can turn the dispenser itself into a reservoir for contamination.CDC specifically advises against adding soap to a partially empty dispenser because refillable soap containers have been linked to bacterial contamination and outbreaks. If a dispenser is reused, it should be handled according to the manufacturer’s instructions; for refillable systems, that generally means the container is emptied, cleaned, dried, and then refilled rather than simply adding new product on top of old.The concern is not just the soap. The inside of the dispenser, pump, nozzle, and residual product can become contaminated. Once that happens, adding fresh product does not magically make the dispenser clean. In fact, poorly maintained bulk dispensers can develop biofilm and contaminate the product being dispensed.That same infection-prevention principle is worth considering for shared shampoo, conditioner, lotion, or body-wash dispensers, especially in healthcare-affiliated housing or temporary residences used by patients receiving ongoing treatment, caregivers, or families. Unlike hand soap, CDC does not have the same specific “do not top off” recommendation for every personal-care product, so policies should follow the manufacturer’s instructions and facility risk assessment. But repeatedly adding new product to a partially used communal dispenser is not a good infection-prevention practice.For on-site patient or family residences, I’d favor one of these approaches: sealed disposable cartridges, individually packaged products, or refillable dispensers that are fully emptied, cleaned, dried, and maintained on a defined schedule. The more medically vulnerable the population, the stronger the argument for a closed or single-use system.A good rule of thumb is:New product should not be poured into an old, partially used reservoir.And because this is exactly the kind of place where responsibility can get fuzzy, the policy should also clearly answer: Who empties it? Who cleans it? How is it dried? Who refills it? And how often is the dispenser itself replaced or inspected?
- 02Short answer: Nope! Not even close! Gloves are not magic force fields. They can develop tiny, invisible micro-tears. The kind you'd never notice. If you're ever watched kids tie-dye shirts, you've seen this firsthand. Even with gloves on, hands often come out stained because dye slips through microscopic breaks. Germs can do the exact same thing. And just like hands, gloves get dirty. They pick up bacteria from patients, equipment, and surfaces. And then spread those germs everywhere they touch. In fact, when gloves are cultured, they're often surprisingly contaminated (yes, even when they look clean). It's also important to remember what gloves are actually for: they protect the wearer. That's what 'personal protective equipment' means. But if gloves aren't changed between patents - or when moving from a dirty task to a clean one - they can become a fast track for germ transmission. Bottom Line Gloves protect you. Hand hygiene protects everyone. That's why hand hygiene is required before putting gloves on and after taking them off - EVERY! SINGLE! TIME!
- 03This one surprises people, but no, not usually. CDC actually recommends alcohol-based hand rub for healthcare workers in most situations. Skeptical? Check the CDC link below. Here's why: Alcohol-based hand rub is fast, effective, and easy to use. When hands aren't visibly dirty, it removes germs more efficiently than soap and water and causes less skin irritation for most people. That's why it's the go-to choice in healthcare and many everyday settings. But, and this matters, there times when soap and water win. Healthcare workers should ALWAYS wash their hands with soap and water when: 1) When their hands are physically dirty 2) Before, during, and after preparing food 3) Before eating food 4) After caring for someone experiencing vomiting or diarrhea 5) After using the toilet 6) After changing diapers or cleaning up a child who has used the toilet 7) After touching an animal, animal feed, or animal waste 8) After touching garbage 9) After caring for a patient w/ C. difficile disease or Norovirus
- 04It sounds backward, but 100% alcohol is actually less effective at killing germs than alcohol at lower concentrations. Here's why: Alcohol kills germs by damaging their proteins and breaking down their outer structure. To do that well, it needs water. Water helps alcohol penetrate the germ and slows evaporation so it stays on the skin long enough to work. At 100% alcohol, two things happen: • It evaporates too quickly, before it can fully kill germs • It causes proteins to harden instantly, which can trap the germ instead of destroying it That's why alcohol-based hand rubs work best at 60-95% alcohol, with water mixed in to improve contact time and effectiveness. Bottom Line: More alcohol isn't better. The right balance is what makes hand sanitizer work.
- 05Both the World Health Organization (WHO) and the CDC agree on when hand hygiene matters most. They just organize the guidance a little differently. The WHO's Five Moments for Hand Hygiene focus on patient care activities and are designed to be easy to remember at the bedside: Before patient contact Before an aseptic task After exposure to or handling of body fluids After patient contact After contact with patient surroundings The CDC aligns with these same moments but provides additional guidance to clarify hand hygiene expectations in everyday clinical practice. • Before moving from a soiled body site to a clean body site • Before donning PPE • After doffing PPE Bottom Line: Different frameworks, one habit that saves lives
bottom of page
