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Sanofi Under Scrutiny: EU Probes Vaccine Marketing Tactics
The EU executive says Sanofi may have disparaged CSL Seqirus’s Fluad in a campaign targeting doctors, and a fine could follow if abuse is confirmed.
On Friday, June 26, 2026, the European Commission opened an antitrust probe into French pharmaceutical group Sanofi for allegedly breaching competition rules in marketing its "Efluelda" flu vaccine, primarily in France and Germany.
The Commission is concerned that Sanofi pursued a misleading communication campaign to disparage the rival "Fluad" vaccine made by CSL Seqirus, portraying it as inferior to Efluelda.
Antitrust officials allege the campaign targeted healthcare professionals in France and Germany, where Sanofi holds a dominant position; this formal investigation follows unannounced raids on company offices in September 2025.
If the alleged anticompetitive practices are confirmed, the Commission could impose a fine on Sanofi for abuse of a dominant position, though a spokesperson denied wrongdoing.
Sanofi stated it is cooperating fully with the European Commission, noting the inquiry "does not in any way prejudge the outcome of the investigation" while emphasizing commitment to fair competition.
The French pharmaceutical giant Sanofi is suspected of having abused its dominant position by conducting a campaign of denigration against a vaccine from its Australian competitor.