Brazil investigating two possible cases of mad cow disease in humans

RIO DE JANEIRO (REUTERS) – Brazilian authorities are investigating two possible cases of mad cow disease in humans in Rio de Janeiro state, a municipal health secretary said in a statement on Thursday (Nov 11), raising a red flag for meatpackers that already halted beef exports to China.

On Sept 4, Brazil confirmed two cases of what it called “atypical” mad cow disease in animals, triggering a suspension of beef exports to China under a standing bilateral agreement.

At the time, Brazil’s Agriculture Ministry stressed that the two cases identified in meat plants in the states of Mato Grosso and Minas Gerais had generated spontaneously and were not related to contaminated feed, as in classic mad cow disease.

On Thursday, municipal health authorities in the city of Rio said federal biomedical institute Fiocruz had flagged two cases of “prion disease,” which can occur spontaneously in elderly patients or by eating contaminated beef in younger populations.

The municipal health authorities said the two cases identified in residents of the Rio suburbs had been referred to state health authorities, without giving the patients’ ages.

The new cases could further delay a Chinese decision on lifting the Brazilian beef ban, which has stranded dozens of shipments, rerouted many others and weighed on beef exports from Latin America’s largest country.

Brazil’s Agriculture Ministry, along with major Brazilian beef exporters JBS, Minerva and Marfrig Global Foods did not immediately respond to requests for comment.

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