NEW YORK — The Food and Drug Administration says it confirmed three new cases of a potentially lethal brain inflammation linked to the multiple sclerosis drug Tysabri.

There have been 13 reported cases of progressive multifocal leukoencephalopathy, or PML, since mid-2006. The reports are the first confirmed new cases since June. While the disease is rare, the FDA says the risk appears to increase as patients remain on Tysabri.

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LONDON - Scientists have discovered a blood test that could predict the course of multiple sclerosis (MS), or even indicate who is likely to develop the condition after a first MS-like attack.

The results of the study suggest that differing antibody levels produced in response to the common virus Epstein Barr Virus (EBV), may predict the course of MS.

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