Family Sick After Fast Food - McDonald's, Hermosillo Sonora

No. 867 Boulevard Luis Donaldo Colosio M., Hermosillo, 83210 Sonora, Mexico

We bought 3 meals last night (9/23/2019) at about 8:00pm. I ate French fries and soft drink, my son had Fried, drink and hamburger. I vomited at around 12:30am, 1:00am and 3:00am. My son vomited four time after 3:00am, emptying everything in his stomach. We also got diarrhea a few times early in the morning. Now my son is too weak to walk. This is the worst food poisoning we’ve ever had.( we had some slight ones in US). What food/restaurant can we trust in Cancun Mexico? | Symptoms: Diarrhea, Nausea, Vomiting, Weakness