While the FDA hasn't named specific brands, it does note that many of the tainted treats originate in China; though, pet-food manufacturers are not required by U.S. law to state the country of origin for each ingredient in their products. "To date, FDA’s Center for Veterinary Medicine (CVM) has conducted more than 1,200 tests, visited jerky pet treat manufacturers in China, and collaborated with colleagues in academia, industry, state labs, and foreign governments," reads the bulletin. "Yet the exact cause of the illnesses remains elusive."
In January, a New York state lab found treats contaminated with up to six drugs. While the levels of drugs were very low, the treats were still removed from the market; the FDA notes, however, that fewer cases of jerky-related illness were reported after they were taken off the market.
The FDA cautions consumers to be mindful of "jerky tenders or strips made of chicken, duck, sweet potatoes, and/or dried fruit" and their pets' reactions to them. If your pets exhibit any signs of illness — decreased appetite, decreased activity, vomiting, diarrhea, increased water consumption, increased urination — get in touch with your veterinarian immediately. (FDA)