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Continue to ChatThis 19th-century doctor discovered the importance of hand-washing – now it’s the first line of defense for flu and COVID-19 https://eglobaltravelmedia.com.au/2020/03/06/this-19th-century-doctor-discovered-the-importance-of-hand-washing-now-its-the-first-line-of-defense-for-flu-and-covid-19/