Currently, only two states have a certificate of freedom from classical swine fever: Rio Grande do Sul and Santa Catarina. The status was won in May last year, during the 83rd OIE General Session in Paris.

The disease, caused by a virus, is highly contagious and is notifiable to the OIE. It causes high fever, red spots in the body, paralysis in the hind legs, breathing difficulties and can lead to death of the animal.

The latest cases were reported in Brazil in August 2009, in Amapá, Pará and Rio Grande do Norte.

The proposed new states to be certified free from the disease include Minas Gerais, Paraná, Rio de Janeiro and Rondônia, among others.

"This achievement is the result of a great effort of agricultural defence and recognition of Brazilian expertise," said the Agricultural Defence Secretary of the ministry, Luis Rangel.

The 180 OIE member countries have 60 days to respond technically on the subject. "If there is any inquiry, the ministry will maintain a team in readiness for clarification," said the head of the Department of Animal Health, Guilherme Marques.

Mr Marques said that Classical Swine Fever-free status would help Brazil access international markets.

After overcoming this step, the request will go to the meeting of the OIE for final vote (22 to 27 May in Paris) and subsequent delivery of the certificate to Brazil.