EC opens formal antitrust investigation on Sanofi

26 June 2026

The European Commission has opened a formal antitrust investigation to assess whether French pharma major Sanofi (Euronext: SAN) has breached European Union (EU) competition rules by carrying out a communication campaign that disparages the only rival flu vaccine recommended for vulnerable patients with risk factors.

One of the vaccines currently offered by Sanofi is an enhanced flu vaccine, which is specifically designed to provide greater protection against influenza for people over 60.

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Chairman, Sanofi Aventis UK