Investor Presentaiton

Administration HCPs do not accept administration hurdles for flu vaccines Workplace Doctor's office Pharmacy Flu vaccination networks set up to maximize access; unfit to manage ultra-cold chains and short shelf life Drive- through III School Lack of refrigerator-stable, full-season product could decrease HCP uptake/use by -37% Source: Based on quantitative and qualitative conjoint analysis market research. Q4 2022. U.S., UK, Germany and Australia. Quantitative: 2180 consumers, 501 HCPs. Qualitative: 72 consumers, 94 HCPs. 46 Vaccines Investor Event sanofi

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