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A bottle of hydroalcoholic solution with a caricature of Professor Didier Pittet, director of the Infection Control Programme at the Geneva University Hospitals (HUG) and WHO's Leader of the Global Patient Safety, is pictured at the Geneva University Hospitals (HUG), in Geneva, Switzerland, Monday, March 30, 2020. Switzerland's Professor Didier Pittet has developed a hydroalcoholic solution that he democratized throughout the world. (KEYSTONE/Salvatore Di Nolfi)