They are advertising for a new position. I guess with the closure in Melbourne, there will be some new scientific positions coming through from time to time in their US lab.
http://www.linkedin.com/jobs2/view/17316313?trk=job_view_similar_jobs
Here is how Biota describes itself to applicants:
Biota Pharmaceuticals, Inc. is a biopharmaceutical company focused on the discovery and development of products to prevent and treat serious and potentially life-threatening infectious diseases. The Company currently has two Phase 2 clinical-stage product candidates: laninamivir octanoate, which the Company is developing for the treatment of influenza A and B infections in the United States; and vapendavir, a potent, oral broad spectrum capsid inhibitor of enteroviruses, including human rhinovirus. In addition to these clinical-stage development programs, the Company has preclinical programs focused on developing treatments for respiratory syncytial virus.