The Dinner plan

Let's put it this way, me and my work team have been trying to have a nice dinner together just to have fun and enjoy good food.Unfortunately it just never happen!!!! Believe it or not we've been trying to plan this for may be 5 times, but closer to the date/on the date a person just get sick and the plan always gets canceled. We planned to go to Hurricane at Bondi beach and we never make it because people got sick. And today we tried to go to my place to have sushi but two of them got sick. We think our dinner plan is jinxed, and I don't know whether to believe it or not but it happens to many times?!?!?