FDA Officials Say They Have Found A Clear Link Between Tainted Heparin And 81 Deaths In US Gardiner Harris Washington: A contaminated blood thinner from China has been found in drug supplies in 11 countries, and federal officials said Monday they had discovered a clear link between the contaminant and severe reactions now associated with 81 deaths in the United States. The FDA has identified 12 Chinese companies that have supplied contaminated heparin to 11 countries