An anonymous reader writes 'Health officials say a patient in Texas has died of a rare brain disorder believed to be caused by consumption of beef products contaminated with mad cow disease. It is only the fourth known case of its kind in the United States. The Centers for Disease Control and Prevention said in a statement that recent laboratory tests confirmed a diagnosis of variant Creutzfeldt-Jakob disease in the patient.' From the article: 'The CDC says the Texas patient's history included extensive travel to Europe and the Middle East and that it is likely the infection occurred overseas. In each of the three previous U.S. deaths, the initial infection is believed to have taken place in other countries. ... The Texas Department of State Health Services says there are no state public health concerns or threats associated with the case. State and federal health officials continue to investigate and are trying to track the source of the infection.'