November 16, 2020 Poste, G. Pressing Threats II: New and Emerging Bioweapons (November 2020) Week 6. Overview of Biosecurity GSC 598 Fall 2020. Home ยป Poste, G. Pressing Threats II: New and Emerging Bioweapons (November 2020) Week 6. Overview of Biosecurity GSC 598 Fall 2020.