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Continue to ChatVitamin D supplements protect against acute respiratory infections including colds and flu, according to a study led by Queen Mary University of London (QMUL) https://clinicalnews.org/2017/02/17/vitamin-d-supplements-protect-against-acute-respiratory-infections-including-colds-and-flu-according-to-a-study-led-by-queen-mary-university-of-london-qmul/