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Despite efforts the elimination of yaws in a high-endemic community in Papua New Guinea (PNG) is yet to be achieved. The research identifies relapsing, untreated infections and the emergence of antibiotic resistance as contributing to ongoing yaws infection in the community. Researchers from Spain, PNG, the U.S., Australia, and international colleagues led the study.

Ants, like humans, deal with disease. To deal with the bacteria that cause some of these diseases, some ants produce their own antibiotics. A new comparative study identified some ant species that make use of powerful antimicrobial agents - but found that 40 percent of ant species tested didn't appear to produce antibiotics. The study has applications regarding the search for new antibiotics that can be used in humans.

A study published in the Journal of Biological Chemistry is the first to describe a signaling pathway that affects communication -- a process called quorum sensing -- between Streptococcus bacteria cells.

An astonishing number of viruses are circulating around the Earth's atmosphere -- and falling from it -- according to new research from scientists in Canada, Spain and the U.S.