Using the following scenario, complete the case study.

During Spring Break, Angela, Bridgette, and Laura went to a small Mexican town near the Gulf of Mexico. On Friday night, the girls went to a restaurant. Angela and Bridgette shared a pizza with ground beef, refried beans, cheese, and some vegetable toppings. Laura ate a large portion of chicken fajitas. After dinner, Laura brought her leftover chicken fajitas back to the hotel and stored them in the room$$s refrigerator. Saturday morning, the girls ate bagels and fresh fruit. For lunch, the girls stopped at a deli. Angela had a spinach salad with fresh strawberries, blueberries, and poppy seed dressing. Bridgette had a shrimp salad sandwich on a toasted multigrain roll. Laura had a bowl of seafood gumbo soup. The young women were having so much fun that evening, they didn$$t have time for a sit$-$down dinner, so they each ate a hot dog from a street vendor. When they returned to the hotel later that evening, they were a little bit hungry, so they shared Laura$$s chicken fajita leftovers after reheating them in a microwave. Between $3$:$00$ and $5$:$00$ a$.$m$.$ on Sunday morning, Angela and Bridgette each woke up feeling nauseous and bloated. They spent most of Sunday sick with vomiting and diarrhea. Angela also had a very bad headache and chills. Laura felt fine, but she was stuck in the hotel room taking care of her sick friends all day.