GBRC Testing Vaccine to Stop Killer Virus among Lions According to a report from the Gujarat ministry of environment, forest and climate change, the Gujarat forest department is in the process of purchasing 1,000 doses of purevax ferret distemper vaccine from Merial Inc. in the United States (MoEFCC). A total of 1,300 doses of the vaccine used to treat canine distemper virus (CDV) in lions were purchased in 2018, with 1,100 doses being used. Following a high number of lion deaths, up to 85 between January and May, the Centre has recommended that the Gujarat government form a special committee of specialists to investigate the cause.