Hand washing is cleaning your hands with water and soap or other special chemical liquid, to take off dirt, germs, and poisons. Germs and poisons cause disease and other health problems. Germs are bacteria, viruses, funguses. Some new diseases are not stopped by antibiotic drugs. Hand washing stops much new disease. Not washing hands before you cook or touch food is risky.
To scrub your hands for a surgery, you need water you can turn on and off without touching with your hands, a cleaning liquid named "chlorhexidine" or "iodine wash", sterile cloth for drying your hands after washing, a sterile brush for hard washing and another sterile instrument for cleaning under your fingernails. Take off all watches, rings, and other jewels from your hands before washing. Wash your hands and arms to the elbows again and again. Be strong and serious about the washing. Use running water again and again to take off all soap. Keep hands up so water does not go from arms to hands. Dry your hands with the sterile cloth and put on surgical shirt or dress. Sterile means no things on it that make disease.
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