Cheese Bacon Sandwich Illness - Burger King, Brest Bretagne

Rond-Point de Pen Ar C'hleuz, Brest, 29200 Bretagne, France

Sunday, January 2, I ate a cheese bacon sandwich, my appetite cut very quickly, I could not eat the fries because I quickly felt nauseous, without understanding what was happening to me (and yes the current pandemic worried me at first). Then I vomited violently at 3 in the morning, without sleep for 2 hours. I woke up exhausted, nauseated, and without appetite for the next day. I am reporting it to warn if similar cases have been encountered.
This is the 2nd time that this has happened to me, but in a classic restaurant with the cook who was sick (more than 20 people all food confused were intoxicated, some of which affected quite severely). | Symptoms: Nausea, Vomiting