5.5 PURCHASER ACKNOWLEDGEMENT (Pfizer)

Purchaser acknowledges that the Vaccine and materials related to the Vaccine, and the components and constituent materials are being rapidly developed[,] due to the emergency circumstance of the COVID-19 pandemic[,] and will continue to be studied after provision of the Vaccine 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, [the] Purchaser acknowledges that the Product shall not be serialized.

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