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Researchers at Los Alamos National Laboratory are investigating the complex relationships between the spread of the HIV virus in a population and the actual, rapid evolution of the virus (phylogenetics) within each patients body.

Every year as many as 10 million U.S. children risk side effects from antibiotic prescriptions that are unlikely to help their upper respiratory conditions. Many of these infections are caused by viruses, which are not helped by antibiotics.

The layers of skin that form the first line of defense in the bodys fight against infection have revealed a unanticipated secret. The single cell type that was thought to be behind the skins immune defense has been found to have a doppelganger, with researchers from the Walter and Eliza Hall Institute showing the cells, despite appearing identical, are actually two different types.