As a result of the studies described above, a number of studies have been done to show the adequacy of ferrets as models for testing vaccine efficacy (reviewed by van der Laan et al., 2008; (Huber et al., 2008; Parks et al., 2007) and the effectiveness of antiviral drug therapy (Smee et al., 2008, Oxford et al., 2007, Malakhov et al., 2006).