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New virus isolated from patients with severe brain infections
Date:6/17/2013

Researchers have identified a new virus in patients with severe brain infections in Vietnam. Further research is needed to determine whether the virus is responsible for the symptoms of disease.

The virus was found in a total of 28 out of 644 patients with severe brain infections in the study, corresponding to around 4%, but not in any of the 122 patients with non-infectious brain disorders that were tested.

Infections of the brain and central nervous system are often fatal and patients who do survive, often young children and young adults, are left severely disabled. Brain infections can be caused by a range of bacterial, parasitic, fungal and viral agents, however, doctors fail to find the cause of the infection in more than half of cases despite extensive diagnostic efforts. Not knowing the causes of these brain infections makes public health and treatment interventions impossible.

Researchers at the Oxford University Clinical Research Unit, Wellcome Trust South East Asia Major Overseas Programme and the Academic Medical Center, University of Amsterdam identified the virus, tentatively named CyCV-VN, in the fluid around the brain of two patients with brain infections of unknown cause. The virus was subsequently detected in an additional 26 out of 642 patients with brain infections of known and unknown causes.

Using next-generation gene sequencing techniques, the team sequenced the entire genetic material of the virus, confirming that it represents a new species that has not been isolated before. They found that it belongs to a family of viruses called the Circoviridae, which have previously only been associated with disease in animals, including birds and pigs.

Dr Rogier van Doorn, Head of Emerging Infections at the Wellcome Trust Vietnam Research Programme and Oxford University Clinical Research Unit Hospital for Tropical Diseases in Vietnam, explains: "We don't yet know whether this virus is responsible fo
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Contact: Jen Middleton
j.middleton@wellcome.ac.uk
44-207-611-7262
Wellcome Trust
Source:Eurekalert

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