1. AstraZeneca PLC
2. Sanofi Pasteur MSD AG
3. GSK PLC
4. Abbott Laboratories Inc
5. CSL Ltd
6. Pfizer Inc
7. CPL Biologicals Pvt Ltd
8. Mitsubishi Tanabe Pharma Corp
9. Sinovac Biotech Co Ltd
10. Zydus Lifesciences Ltd