Prionics agreed to acquire Pfizer's ( PFE) Animal Health diagnostic products. Terms weren't disclosed, but Zurich-based Prionics said the product line includes tests for the detection of Bovine tuberculosis, known as Bovigam, and Paratuberculosis, known as Parachek, in animals raised as a food source. Both diseases cause major economic damage to the farm industry and also have implications to human health. "With this expansion of our product portfolio, we are confident that we're well positioned to further grow sustainably in the farm animal diagnostics business," said Ernst Zollinger of Prionics, a 1997 spinoff from the University of Zurich. Prionics, which calls itself the world leader in fast reliable tests for mad cow disease, said it will fully integrate the diagnostic tests into its product portfolio through a one-year transition phase to ensure a smooth changeover. Bovine tuberculosis and paratuberculosis are major farm animal diseases that cause severe economic damage in breeding stock and milk- and meat-producing animals worldwide with severe implications to human health. Diagnostic tests for bovine tuberculosis and paratuberculosis can help to reduce the risk of infection in human beings as well as contribute to targeted eradication and control of these diseases. Bovine tuberculosis is an infectious disease that is caused by the bacteria Mycobacterium bovis. Bovine TB primarily affects cattle, but other animals may become infected. Disease due to M. bovis in animals most often occurs in the lungs but may also occur in the intestines and other parts of the body. M. bovis is transmitted to humans primarily through consumption of raw milk or dairy products but can also be transmitted through the respiratory route. Paratuberculosis leads to Johne's Disease in cattle, goat and wild animals and has been implicated as a causal agent for Crohn's Disease in humans -- a chronic inflammatory bowel disease. On Monday, Pfizer's stock fell 13 cents to $21.12.