Health officials are also working to develop a definition of a case of the new variant of Creutzfeldt-Jakob disease.

If humans can acquire a variant of Creutzfeldt-Jakob disease from beef contaminated by mad cow disease, the exposure is believed to have been greatest in the 1980's.

British scientists reported in March on a likely link between the cattle disease and a newly recognized variant of Creutzfeldt-Jakob disease in humans.

"Then they said that the tests had shown that he had a new variant of Creutzfeldt-Jakob disease," he said.

B.S.E., known popularly as mad cow disease, converts in humans into a variant of Creutzfeldt-Jakob disease.

As a result, researchers in the United States stepped up their efforts to monitor for both mad cow disease and the new variant of Creutzfeldt-Jakob disease.

Hashimoto-Pritzker disease is a congenital self-healing variant of Hand-Schüller-Christian disease.

Mr President, more than 20 people have been victim to the new variant of Creutzfeldt-Jakob disease.

Legislative measures to fight against BSE and the new variant of Creutzfeldt-Jakob disease have been adopted.

This disorder is sometimes referred to as lipo granulomatosis subcutanea, and is a rare variant of Weber-Christian disease.