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When it comes to infectious diseases, we live in a "triple-threat" world, says Lonnie King, Dean of the College of Veterinary Medicine at Ohio State University in Columbus.
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Rinsing contaminated fingers with water alone, or with triclosan-containing soap and water, was considerably more effective for removing Norwalk virus than was using an alcohol-based hand sanitizer, but the antibacterial soap showed no advantage over water alone, according to a report in the January Applied and Environmental Microbiology (76:394-399).
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Selective losses of human-associated microorganisms may be responsible for a wide range of modern ailments, including esophageal diseases, obesity, asthma, and the epidemic spread of high-grade pathogens, according to Martin Blaser from New York University Langone Medical Center in New York City.
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Because a solitary bacterial cell can sense its own signaling molecule to reprogram itself from benign to virulent, "quorum sensing" may be a misnomer, according to researchers in New Mexico.
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Even with the influenza season winding down in the Northern Hemisphere, talk about vaccines continues.
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Sporormiella spores found in Pleistocene-age dung specimens, which were recovered from Appleman Lake in Indiana, are helping to explain what led to the sudden disappearance of 135 species of Pleistocene animals in North America between 14,800 and 13,700 years ago, according to Jacquelyn Gill from the University of Wisconsin, Madison, and her collaborators.
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