in 2006, dftd was classed a list b notifiable disease under the government of tasmania's animal health act 1995. the strategy of developing an insurance population in captivity was developed. it was reassessed in 2008. a 2007 investigation into the immune system of the devils found that when combatting other pathogens, the response from the immune system was normal, leading to suspicion that the devils were not capable of detecting the cancerous cells as "non-self". in 2007, it was predicted that populations could become locally extinct within 10–15 years of dftd occurring, and predicted that the disease would spread across the entire range of the tasmanian devils causing the devils to become extinct within 25–35 years.