From BBC News:
Chinese officials have rejected claims by US authorities that Chinese imports are to blame for deaths among users of the blood-thinning drug heparin.
The US Food and Drug Administration (FDA) says a contaminant sourced to a Chinese factory has been found in heparin supplies in 11 countries. The FDA is linking the contaminant to severe allergic reactions, and deaths, among users of the drug in the US. China says no other countries have had a problem with the drug.