The European Commission has opened an antitrust investigation into Sanofi for allegedly running a misleading communication campaign that disparaged CSL Seqirus's Fluad flu vaccine while promoting its own Efluelda vaccine in Germany and France. Regulators are concerned that Sanofi portrayed Fluad as inferior to Efluelda despite national and European recommendations supporting the CSL vaccine for vulnerable patients, and that this conduct may amount to anticompetitive disparagement and abuse of a dominant market position. The probe follows unannounced raids on Sanofi offices in September 2025, and the company has stated it is confident it complied with competition law and is cooperating fully with the European Commission. Sources: EU Commission opens antitrust probe into Sanofi's flu vaccine campaign Sanofi invited to settle EU antitrust probe into flu vaccine (update*) Commission opens disparagement investigation into Sanofi European antitrust regulators probe Sano...
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