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HONG KONG, Jun 12, 2009 (Xinhua via COMTEX) -- A study conducted by University of Hong Kong (HKU) Li Ka Shing Faculty of Medicine showed that the initial transmission of A/H1N1 flu virus to humans may take place in early 2009, months before the outbreak was detected.
In a press release on Friday, the HKU said their study used evolutionary analysis to estimate the timescale of the origins and the early development of the swine-origin influenza A/H1N1 virus ( S-OIV) epidemic.