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Thorough hand washing is typically recommended. But use of hand sanitizers is promoted, too. However, a recent study found that staff in long-term care facilities who relied too much on hand sanitizers over hand washing actually reported more outbreaks of norovirus-related illness.
Some hand sanitizer products use agents other than alcohol to kill microorganisms, such as povidone-iodine, benzalkonium chloride or triclosan. The World Health Organization (WHO) and the CDC recommends persistent antiseptics for hand sanitizers.