The present invention provides an attenuated virus, which is derived from Modified Vaccinia Ankara virus, wherein the MVA-BN virus, or a derivative thereof, induces at least substantially the same level of immunity in vaccinia virus prime/vaccina virus boost regimes when compared to DNA prime/vaccinia...http://www.google.com.au/patents/US7939086?utm_source=gb-gplus-sharePatent US7939086 - Modified Vaccinia Ankara virus variant
