The U.S. Food and Drug Administration (FDA) says it is confident that existing animal feed safeguards are effective at preventing the spread of mad cow disease.

The FDA made the statement on Friday and said the administration will work with the Department of Agriculture to complete a thorough epidemiological investigation, although current science suggests that atypical cases of mad cow disease, such as the case confirmed earlier this week, are unlikely to be transmitted through animal feed.

The statement follows Indonesia’s recent halt of U.S. beef imports and as major retailers in South Korea, which imports a relatively large amount of U.S. beef, stopped the sale of American beef following the halt of quarantine inspections.

In response to Indonesia’s measures, U.S. Trade Representative Ron Kirk said no products were found to be contaminated with mad cow disease in any other international food chain. Kirk projected that Indonesia would promptly resume imports.