Virus-Like Agent Blamed for Mad Cow Disease
A puzzling brain disease of cattle, seemingly acquired from sheep ground up in their feed, is running rampant through British herds
Jeremy Cherfas
The caption for the figure entitled "More mad cows" accompanying Jeremy Cherfas' News & Comment article "Virus-like agent blamed for mad cow disease" (2 Feb., p. 523) was incorrect. The bar graph shown represented the cumulative number of cases of bovine spongiform encephalopathy reported in the United Kingdom from December 1988 through January 1990.