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In Nature this week: modified CRISPR approach changes single nucleotides, new salmon genome assembly, and more.

Roche's molecular diagnostics business, which makes up 17 percent of its overall diagnostics sales, grew 11 percent, driven by virology testing and sequencing.

The virus, known as HPgV-2, was detected in blood samples from individuals with concurrent hepatitis C virus infections.

It's the first approved test to feature the firm's proprietary AmpiProbe nucleic acid amplification and detection platform.

In PNAS this week: decreased DOCK4 expression in myelodysplastic syndromes plus anemia, hepatitis A evolution, and more.

A survey of small mammals from around the world uncovered new and known hepatoviruses that are helping to clarify relationships between viral clades.

Following a beta evaluation of the system, a virology lab in Sheffield, UK, ran a workflow assessment and found improvements with the system.

The hepatitis C virus test has been approved for both the confirmation of active infection as well as for viral load monitoring.

The tests are the first assays approved by the FDA to run on the firm's Cobas 6800 and Cobas 8800 systems. 

The study demonstrated the efficacy of using the Oxford Nanopore MinIon and a bespoke computational pipeline to perform metagenomics testing of viral infections in patients. 

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Researchers uncovered the HIV virus within a tissue sample collected in 1966, the Atlantic reports.

Nature News reports there are a handful of clinical trials underway to evaluate vaginal microbiome seeding of newborns born via caesarian section.

The Washington Post writes that humans may have contributed to the extinction of cave bears some 20,000 years ago.

In PLOS this week: gene variant may protect against trypanosomiasis, GLIS3 role in type 2 diabetes, and more.