Fluoroquinolones are a class of antibiotics, used to treat serious bacterial infections. An investigation into unintentional injuries and deception was opened in Paris.

The Paris prosecutor's office received complaints from people who suffered abnormal adverse effects after taking antibiotics. In 2019, the use of fluoroquolone medications was significantly restricted. The European Medicines Agency “strongly recommended restricting” their use “after an assessment carried out at European level in 2018 on the risk serious and long-lasting”