US health officials confirmed on May 19 that the country had discovered a case of mad cow disease at a slaughterhouse in the southeastern state of South Carolina.
The US Department of Agriculture's announcement stated that this was an atypical case of mad cow disease; the cow "did not enter the slaughter system and does not pose a risk to the food supply or public health in the US".
Mad cow disease is the abbreviation for Bovine Spongiform Encephalopathy (BSE). The disease is caused by a prion protein that causes neurological damage and death in cattle.
Atypical BSE is usually found in older cattle. Classic BSE is spread when ranchers feed meat and bones from infected animals to their herds. In terms of impact, classic BSE poses a greater risk to humans. BSE can contribute to the death of people with Creutzfeldt-Jakob disease (a type of encephalitis in humans) if they eat meat from infected animals.
This is the seventh time in 20 years that the US has detected a case of mad cow disease, most of which are atypical cases.
Previously, mad cow disease cases in the US, Canada, Israel, Japan and Europe have disrupted global food trade, causing billions of dollars in losses.
According to VNA