By Steve Kingstone
BBC correspondent in Sao Paulo
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Police have uncovered evidence of fraud within Brazil's department of health thought to run into hundreds of millions of dollars. It is alleged that civil servants were among those who profited from the purchase of blood supplies imported from abroad throughout the 1990s.
On Wednesday 14 people were arrested in three Brazilian cities.
The darkly named Operation Vampire has revealed fraud said by the Brazilian government to total $637m.
The money was allegedly siphoned off by civil servants and others involved in the state purchase of blood supplies used to treat haemophilia.
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More:
http://news.bbc.co.uk/1/hi/world/americas/3730987.stm