1. AstraZeneca PLC
2. Bavarian Nordic A/S
3. CSL Limited
4. Eli Lilly and Company
5. GlaxoSmithKline PLC
6. Indian Immunologicals Ltd.
7. Johnson & Johnson Services Inc.
8. Merck & Co. Inc.
9. Mitsubishi Chemical Corporation
10. Novartis AG
11. Pfizer Inc.
12. Sanofi S.A.
13. Serum Institute of India Pvt. Ltd.
14. SINOVAC Biotech Ltd.
15. Zoetis Inc.