An investigation has been launched by the European Commission against the pharmaceutical company Sanofi. The company is being investigated for allegedly promoting its flu vaccine through a campaign that discredited a competitor's vaccine. The investigation aims to determine if Sanofi violated EU competition rules with its campaign.

The European Commission is looking into the matter to assess whether the company's actions were in line with EU regulations. Further details about the investigation are available from the source, El País. The outcome of the investigation is not yet known, and the Commission will likely release more information as the case progresses.