1. Merck & Co.
2. Sanofi Pasteur Inc.
3. Japan BCG Laboratory
4. China National Biotec Group
5. Serum Institute of India Pvt. Ltd,
6. InterVax Ltd
7. GreenSignal Bio Pharma Limited
8. Statens Serum Institute
9. PowderJect Pharmaceuticals
10. Biomed Lublin