High Quality Content by WIKIPEDIA articles! Anthrax Vaccine Adsorbed (AVA) — also called MDPH-PA or MDPH-AVA; trade name BioThrax — is the only FDA-licensed human anthrax vaccine in the United States. It is produced by Emergent BioDefense Corporation, formerly known as BioPort Corporation in Lansing, Michigan. The parent company of Emergent BioDefense is Emergent BioSolutions of Rockville, Maryland. Both Emergent BioSolutions and Porton International Group, Ltd., Porton Down, UK, are controlled by Fuad El-Hibri.