State tests will seek cause of Portsmouth woman's death By Nancy Young The Virginian-Pilot April 11, 2008 PORTSMOUTH The Virginia Department of Health should have test results back in several months that will determine whether a young woman who died Wednesday had a rare brain disorder that has been linked to mad cow disease. Health department officials stressed again Thursday that they were looking into a range of disorders. The 22-year-old woman, identified in media reports as Aretha Vinson, died at Bon Secours Maryview Medical Center. She had been suffering from encephalopathy, a degenerative brain condition that can be...