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The virulent pathogen that causes the disease tularemia, or "rabbit fever," was weaponized during past world wars and is considered a potential bioweapon. Through a new study of the coccobacillus Francisella, Los Alamos National Laboratory researchers are working to use DNA markers to discern related but relatively harmless species as they are identified and to provide a means to distinguish them from the harmful F. tularensis.

Fungal infections are a serious health risk. They can be harmful especially to patients whose immune system is compromised through illness or chemotherapy. A team working at the Technical University of Munich (TUM) has discovered an important mechanism in the body's defenses against fungi. The discovery explains, among other things, why people with certain genetic variations are more susceptible to fungal infections.

Defects in the body’s regulatory T cells cause inflammation and autoimmune disease by altering the type of bacteria living in the gut, researchers from The University of Texas Health Science Center at Houston have discovered. The study, “Resetting microbiota by Lactobacillus reuteri inhibits T reg deficiency-induced autoimmunity via adenosine A2A receptors,” which will be published online December 19 in the Journal of Experimental Medicine, suggests that replacing the missing gut bacteria, or restoring a key metabolite called inosine, could help treat children with a rare and often fatal autoimmune disease called IPEX syndrome.

Researchers have identified neutralizing antibodies against Zika virus from an infected patient that fully protected mice from infection, adding to the current arsenal of antibodies in development for much needed antiviral therapies and vaccines. Unlike other human antibodies under investigation that recognize both Zika and the closely related dengue virus, the antibodies used in this study exclusively target Zika, demonstrating a high specificity that could be important in avoiding potential side effects - such as enhanced dengue infection in regions where both viruses are endemic.

A key skin protein previously overlooked in studies of staph infection has the ability to quell antibiotic-resistant staph- and strep-based skin infections, according to a study in the Nov. 18, 2016 issue of Science Immunology.