- MedImmune LLC (AstraZeneca PLC)
- Sanofi Pasteur AG
- GlaxoSmithKline Plc
- Abbott Laboratories
- CSL Limited (Seqirus GmbH)
- Pfizer Inc
- CPL Biologicals Pvt. Ltd
- Mitsubishi Tanabe Pharma Corporation
- Sinovac Biotech Ltd
- Zydus Cadila