Fears are growing that a new form of Creutzfeldt-Jakob disease (CJD - the human form of BSE or mad cow disease) could have spread to humans. The concern has arisen following a sharp upturn in the number of people dying from sporadic CJD in Switzerland, reports Nature Science Update. Sporadic CJD is a different form of the disease that affects people over the age of 60. Each year between 1997 and 2000, eight to 11 of Switzerland's 6.5 million people developed CJD. In 2001, 19 cases were reported; while seven were reported in the first quarter of 2002. This is around four times higher than the reported incidence anywhere else, including Britain.