Presented at London Calling 2016

Included in ebola, nanopore themes

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Research area: genomics

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Rapid metagenomic identification of viral pathogens in clinical samples by real-time nanopore sequencing analysis

Created on 5th June 2015

Alex L Greninger ; Samia N Naccache ; Scot Federman ; Guixia Yu ; Placide Mbala ; Vanessa Bres ; Jerome Bouquet ; Doug Stryke ; Sneha Somasekar ; Jeffrey Linnen ; Roger Dodd ; Prime Mulembakani ; Bradley Schneider ; Jean-Jacques Muyembe ; Susan Stramer ; Charles Y Chiu

We report unbiased metagenomic detection of chikungunya virus (CHIKV), Ebola virus (EBOV), and hepatitis C virus (HCV) from four human blood samples by MinION nanopore sequencing coupled to a newly developed, web-based pipeline for real-time bioinformatics analysis on a computational server or laptop(MetaPORE). At titers ranging from 107-108 copies per milliliter, reads to EBOV from two patients with acute hemorrhagic fever and CHIKV from an asymptomatic blood donor were detected within 4 to 10 minutes of data acquisition, while lower titer HCV virus (1x105 copies per milliliter) was detected within 40 minutes. Analysis of mapped nanopore reads alone, despite an average individual error rate of 24% [range 8-49%], permitted identification of the correct viral strain in all 4 isolates, and 90% of the genome of CHIKV was recovered with >98% accuracy. Using nanopore sequencing, metagenomic detection of viral pathogens directly from clinical samples was performed within an unprecedented <6 hours sample-to-answer turnaround time and in a timeframe amenable for actionable clinical and public health diagnostics.

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