Reports about contaminated supplies of the blood thinner heparin raise a number of big, unsettling questions about the global economy, the FDA's ability to police imports of drug ingredients and patient vulnerability.
Contaminated batches of the drug have been found in 10 countries and the U.S. Eighty-one deaths and perhaps hundreds of adverse reactions in the U.S. may be linked to the drug (although it hasn't been firmly established that the drug caused the deaths).
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