Regulators say there is no evidence that the milk poses a danger or that a live virus is present
ASF was first detected in China in early August and in just over a month has been detected in 18 farms or abattoirs in six provinces, said the FAO. Many cases are more than a thousand kilometres apart.
Response to the disease is "extremely challenging", said the statement, citing experts at an emergency meeting called by the FAO in Bangkok this week, as the virus can survive for months in meat products.