Next-generation sequencing (NGS) of ancient DNA collected from plague victim's remains has reduced the burden of blame for rats and fleas and suggested additional Y. pestis vectors.

To survive winter months, humans have learned to build shelter and preserve food, activities that, while life-saving, may also expose us to new microbial threats and challenges. 

When commensal microbes on the skin metabolize compounds in human sweat, unpleasant body odor often results. Some of these odors may be disease-specific, and some may offer diagnostic solutions.