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Mohamed Abd El Ghany | Reuters. Cash may be more filthy and disgusting than you thought, according to new research. Ordinary bank notes, such as dollar bills, can harbor harmful varieties of bacteria, and could be an effective medium for spreading infectious diseases among people, said a group of Hong Kong researchers in a study published this week in the journal Frontiers in Microbiology . The team said the research can help inform the mechanisms by which infectious diseases and antibiotic resistance spread throughout the world. Hong Kong has seen outbreaks of several diseases since at least the 1960s, including an influenza pandemic in 1968, avian flu in 1997, SARS in 2003, and a swine flu outbreak in 2009. Full story

19 May