There is a lot of cases of various food poisons that ciguatera gets blamed for. My totally unscientific view of this is that if the algae becomes present in the waters, with as much fish and various kinds of fish that is eaten in Belize, there would be many more reported cases. I might have said what could be viewed as contradictory statements when I first stated that there could be some "isolated" cases. What I meant to infer was that there could be isolated times when the algae would appear thus causing people to become sick with ciguatera.
Let's not wrongly add one more to the lists of problems with our paradise.