1.Moderna Inc.
2.Pfizer Inc.
3.Johnson & Johnson SA
4.Sinopharm Group Company Ltd.
5.AstraZeneca PLC
6.Serum Institute of India Pvt Ltd.
7.Bharat Biotech International Ltd.
8.Sinovac Biotech Ltd.
9.Sanofi SA
10.GlaxoSmithKline PLC
11.Novavax Inc.
12.Airway Therapeutics Inc.
13.Cadila Healthcare Ltd.
14.CanSino Biologics Inc.
15.Mitsubishi Chemical Holdings Corporation
16.Eubiologics Co. Ltd.
17.United Biomedical Inc.
18.Merck & Co. Inc.
19.CureVac N.V.
20.Inovio Pharmaceuticals Inc.