Genetic testing may help diagnose or rule out brain infections, researchers report. They said their pilot study showed that using computers to rapidly analyze large amounts of genetic and biological information from brain tissue samples could offer a cost-effective addition to pathology lab testing. The research team from Johns Hopkins University in Baltimore noted that more than 50 percent of inflammatory disorders and infections of the brain go undiagnosed, resulting in patients receiving treatments for individual symptoms that can do more harm than good. The study included 10 patients, aged 16 to 68, with signs of brain infection, including fever, weakness in limbs, partial paralysis, numbness, headache or seizures. The researchers took a sample from an area of inflamed, damaged brain tissue and sequenced the DNA in the tissue.

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