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Test Using Drop of Blood Can Reveal Person's Viral Infection History

Every virus that has ever made people sick can now be detected in a drop of blood.  A new test can tell doctors about a person's history of prior viral infections, something that may head off more serious diseases in the future. The new blood test, called VirScan, has the potential to detect more than 1,000 different viral strains in the virome, the vast array of viruses that can infect humans.   Principal investigator Stephen Elledge of Brigham and Women’s Hospital and...

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