The Argentinian veterinary authority sent an Immediate Notification dated 25 June to the OIE.

The farm is at San Andrés de Giles in Buenos Aires province. The outbreak started on 15 June on a farm with 5,586 pigs, of which 1,676 were affected. The report states that the farm has with biosecurity measures in place and its own restocking system; a 4.5-hectares area. There are no other animal species in the farm. The distribution of the animals is as follows: 516 sows, seven hogs, 2,900 castrated pigs, 58 young sows and 2,105 sucking pigs.

The report adds that between 7 and 9 June 2009, two workers of the farm showed flu signs but they did not consult a doctor nor made diagnostic tests. The farm has its own restocking system. The last entry of animals occurred in July 2008. The farm applies biosecurity measures and the animals only leave the farm for slaughter. The source of infection is under investigation.

Since 24 June 2009, no clinical signs have been observed in the animals at the farm, according to the report.