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 test gene therapy targeting a different cancer protein in a new trial, the New York Times reports.

Pennsylvania State University researchers found that salivary microRNAs could predict which kids would have longer concussion symptoms, according to NPR.

The Associated Press reports Alex Azar, the new Department of Health and Human Services secretary nominee, made millions of dollars as a pharmaceutical executive.

In PNAS this week: immune profiling of breast cancer, transposable element patterns in rice, and more.