Haiti cholera deadlier than other strains

New Scientist: The Haiti cholera epidemic has arisen from a new, South Asian strain carrying three genetic mutations that make it more deadly, and able to spread more aggressively, than previous forms of the disease. Scientists who sequenced the DNA of the bacterium, which has killed more than 2,000 people, have reported that it is different from Latin America's naturally occurring strain, and over ten times more deadly than a strain that emerged in Peru in 1991. Two of its three mutations allow the bug to......

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