European Union antitrust regulators have accepted concessions from Sanofi to end an investigation into a promotional campaign that allegedly disparaged a rival flu vaccine. The settlement means Sanofi avoids a fine.

The probe centered on claims that Sanofi ran a misleading effort against a competing flu shot. By offering commitments, the company resolved the matter before regulators imposed a financial penalty.

The source does not specify what concessions Sanofi made. The investigation was based on allegations, and the settlement closes the case without a fine.