The cholera strain that is devastating Haiti likely originated from Southeast Asia, reports researchers from Boston and Pacific Biosciences. In the New England Journal of Medicine, the researchers describe using PacBio's single-molecule real-time DNA sequencing method to distinguish the cholera strain circulating in Haiti from others found in Latin America and the US Gulf Coast.

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Researchers suggest that genetic variations could influence the side effects people experience when using synthetic cannabinoids, the International Business Times reports.

An analysis has examined the makeup of researchers on Twitter and what they share, Nature News reports.

At Stat News, Jim Kozubek argues that the Broad Institute is pushing the boundary of what a nonprofit is.

In PNAS this week: gut microbes may affect honeybee weight, phenotype and gene expression changes in DiGeorge syndrome, and more.