19th Century Cholera Strain From Philadelphia Genetically Sequenced
About 1,000 of the city's residents died as result of infection with the water-borne pathogen that year, a figure that might have been considerably higher were it not for a programme to wash the city's filthy streets with clean reservoir water. Now DNA isolated from the preserved 165-year-old intestine of a victim has yielded a complete genome sequence of the bacterium responsible — the first from a nineteeth-century strain of Vibrio cholerae.
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