A new dengue treatment that could become the first to prevent and treat the virus has proven effective in initial trials in monkeys. The AFP news agency reports that dengue can cause intense flu-like symptoms, and sometimes develops into a severe form which can be fatal. Because there are four different strains, getting infected by one does not protect against another, and catching dengue a second time is often more serious. With no treatment available, efforts currently focus on reducing transmission — including by infecting mosquitoes with a bacteria.

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