NEW YORK (GenomeWeb News) – An international team led by investigators at the Wellcome Trust Sanger Institute delves into the genetics and evolutionary history of a dysentery-causing microbe called Shigella sonnei that has become more widespread in rapidly industrializing regions, including places with improved water quality. This pattern opposes that established for the related species called S. flexneri, a frequent dysentery culprit in developing countries which tends to wane once clean water sources are available.

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In PNAS this week: ancestry and admixture in Brazilians, characterization of novel double-stranded RNA mycovirus, and more.

Researchers report that what scents someone picks up can reflect their complement of immune genes.

The New York Times examines ethics and China's push to lead biomedical research.

At her blog, Sally Rockey dives into National Institutes of Health funding data.