Suspected Salad Causes Illness - Philippines, Cebu City Central Visayas

Cebu City, Central Visayas, Philippines

ate at 7pm 7/10/19. we ordered the salad, sashimi, ramen, sushi, french fries, beef with yakiniku sauce. my mom, dad, sister and me woke up in the middle of the night due to stomach pains, vomiting and diarrhea but my other sister was fine. i think it was the greens because all of us ate the salad except for her. Probably didnt wash the lettuce properly | Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain