WHO currently assesses the public health risk of cattle-to-human transmission of the virus "to be low,' but notes that their assessment will be reviewed should further epidemiological or virological information become available. In the U.S., efforts to monitor the spread of the disease are being handled by the United States Food and Drug Administration, which is monitoring contamination in dairy sources. Webby says some cows have been asymptomatic and that it's not nearly as deadly among cattle as