Purchase Agreement Between South Africa and Pfizer

5.5 Purchaser Acknowledgement. Purchaser acknowledges that the Vaccine and materials related to the Vaccine, and their components and constituent materials are being rapidly developed due to the emergency circumstances of the COVID-19 pandemic and will continue to be studied after provision of the Vaccine to Purchaser under this Agreement. Purchaser further acknowledges that the long-term effects and efficacy of the Vaccine are not currently known and that there may be adverse effects of the Vaccine that are not currently known. Further, to the extent applicable, Purchaser acknowledges that the Product shall not be serialized.[emphasis added]

— Purchase Agreement Between South Africa and Pfizer
MANUFACTURING AND SUPPLY AGREEMENT BETWEEN PFIZER LABORATORIES PROPRIETARY LIMITED AND THE GOVERNMENT OF THE REPUBLIC OF SOUTH AFRICA ACTING THROUGH THE NATIONAL DEPARTMENT OF HEALTH OF SOUTH AFRICA ( "NDOH" ) DATED AS OF 30 March 2021 (Opens new window)