A comparison is made regarding the number of viruses of concern reported presently in each of the FBS producing countries. United States Department of Agriculture (USDA) and European Union (EU) regulations have identified 8 adventitious viruses and 6 additional viruses of importation concern that need to be tested for or eliminated in FBS, viruses that can cross the placental barrier from the donor cow to the fetus. The article reviews the 2013 information from the World Organization for Animal Health (OIE), regarding the presence and absence of the 14 viruses of concern for FBS in the cattle populations of the 30 major FBS producing countries of the world. The article aims to clarify an existing misunderstanding by the users of fetal bovine serum (FBS), who assume that certain countries, like Australia and New Zealand, have fewer cattle disease viruses and pose less risk for the presence of viruses, than do the other FBS producing countries.
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