Tag Archives: Encephalitis

December 2021—Clinical metagenomic next-generation sequencing (mNGS), the comprehensive analysis of microbial and host genetic material (DNA and RNA) in patient samples, is increasingly available in clinical laboratories. At present, for various reasons including test complexity, cost, and turnaround time, this technology is generally limited to difficult-to-diagnose conditions where conventional microbiological testing methods may not lead to a definitive diagnosis in selected patients, such as those with meningoencephalitis of unknown etiology.

April 2014—In what may be a first for the burgeoning field of next-generation sequencing, this powerful new technology was used to identify the cause of encephalitis in a teenage boy who had been critically ill in the intensive care unit for several weeks. Diagnosis suggested a specific treatment. Within two weeks of initiating therapy, the boy had recovered and was discharged. It is becoming common practice to use NGS to detect mutations that can help select drug therapy in cancer cases and to find genetic variations responsible for inherited diseases. However, NGS has not previously been considered a useful tool in critical care situations, where a short turnaround time is crucial.