A nurse at a long-term care facility is assisting with teaching staff about infection control practices. Which of the following examples should the nurse include as an infection control hazard?
1. A staff member wipes a countertop with chlorhexidine solution to clean the area following a blood spill.
2. A nurse pours sterile 0.9% sodium chloride irrigation solution on an open pressure wound prior to collecting a specimen for culture
3. A staff member places a midstream urine sample in a specimen refrigerator after collecting it.
4. A nurse uses alcohol-based antiseptic to clen his hands after talking with a client who has varicella zoster.
