Saw the program yesterday, a bit lame. Visiting the hotel in Bayahibe, Isla Saona, forensic office in Santo Domingo and the head office of the hotel chain in SD. Conclusion of the reporter is that if it was food poisoning it likely happened in the tapas bar of the hotel and not on the Saona trip. Dominican results say food poisoning, Dutch results say bacteriological infection. One expert says you can certainly die from that kind of food poisoning, another says you can hardly die as a healthy adult, let alone both.
Confirmed by Dominican authorities that there was NO drugs in play as insinuated in the beginning.
Most likely what happened was that they got sick from something they ate and here they tried to play it down / cover it up to not hurt tourism.