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This Pulse reviews the microbial levels found on common surfaces in the healthcare environment, pathogen persistence, and transmission mechanics, and provides suggestions for effective cleaning and disinfection.

In the first study to look at would-be diseases carried by New York City rats, scientists at the Center for Infection and Immunity at Columbia University's Mailman School of Public Health identified bacterial pathogens, including E. coli, Salmonella, and C. difficile, that cause mild to life-threatening gastroenteritis in people; Seoul hantavirus, which causes Ebola-like hemorrhagic fever and kidney failure in humans; and the closest relative to human hepatitis C. Results appear in the journal mBio.