A study commissioned by the National Institute of Health (NIH) and conducted by the Institute of Medicine (IOM) concluded in a report (see report brief) released on December 15, 2011 that ‘while the chimpanzee has been a valuable animal model in past research, most current use of chimpanzees for biomedical research is unnecessary’. The primary recommendation is that the use of chimpanzees in research be guided by a set of principles and criteria, in effect to greatly limit government-funded research using chimpanzees. Falling short of calling for the out-right ban of using chimpanzees for research, the report acknowledged that new emerging, or re-emerging diseases may require the use of chimpanzees, echoing Professor Colin Blakemore's concern.