Quaternary ammonium compounds can linger on surfaces and in indoor air and dust long after the disinfectant has dried.
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Quaternary ammonium compounds, also known as QACs or quats, are commonly used antimicrobials also found in many household products. Soap and water may be a safer bet when cleaning surfaces.
The WHO recommends sanitisers with an alcohol content of at least 70%.
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Hand hygiene is a critical part of the response to COVID-19. Washing hands at regular intervals during the day is essential. If water and soap are unavailable, hand sanitisers are an alternative.
Homeless people at the 42nd Street and Bryant Park subway station in New York City, March 9, 2020.
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With holiday travel in full swing and people packed together in small spaces, it’s important to try to stop the spread of germs. But can we really get our hands clean with a few seconds of cold water?