Altimmune, Inc., formerly Pharmathene, Inc., is a clinical-stage immunotherapeutic company. The Company focuses in development of medical counter measures against biological and chemical threats. The Company is involved in development of two next generation anthrax vaccines. It has two proprietary platform technologies, RespirVec and Densigen. Its candidates include NasoVAX, HepTcell, NasoShield and Oncosyn. NasoVAX is an intranasally administered recombinant influenza vaccine. The Company has completed Phase I clinical trials of NasoVAX. HepTcell is being tested as an immunotherapy for patients chronically infected with the hepatitis B virus. NasoShield is an intranasal, single-dose anthrax vaccine designed to provide rapid, stable protection after one intranasal administration. Oncosyn is being developed as a cancer immunotherapeutic product candidate. Oncosyn targets multiple tumor antigens simultaneous to prevent tumor escape.