It is their technology, not the vaccine itself. This report describes the challenge that MDG is poised to meet:
There are several H5N1vaccines for several of the avian H5N1 varieties, but the continual mutation of H5N1 renders them of limited use to date: while vaccines can sometimes provide cross-protection against related flu strains, the best protection would be from a vaccine specifically produced for any future pandemic flu virus strain. Dr. Daniel Lucey, co-director of the Biohazardous Threats and Emerging Diseases graduate program at Georgetown University has made this point, "There is no H5N1pandemic so there can be no pandemicvaccine". However, "pre-pandemicvaccines" have been created; are being refined and tested; and do have some promise both in furthering research and preparedness for the next pandemic. Vaccine manufacturing companies are being encouraged to increase capacity so that if a pandemicvaccine is needed, facilities will be available for rapid production of large amounts of a vaccine specific to a new pandemic strain.
Link:
https://www.news-medical.net/health/Bird-Flu-(H5N1)-Prevention.aspx
BK