GAITHERSBURG, Md.--(BUSINESS WIRE)--Emergent BioSolutions Inc. (NYSE:EBS) today announced that it has successfully completed the 4Q 2006 deliveries of over three million doses of BioThrax® (Anthrax Vaccine Adsorbed), the only FDA licensed anthrax vaccine, to the Department of Health and Human Services (HHS) for placement into the nation’s strategic national stockpile (SNS). The delivery of these doses, made under a May 2006 modified contract with HHS, represents 4Q 2006 revenue of approximately $75 million.