The Centre for Health Protection is investigating a report of suspected ciguatera poisoning involving six people. All are in stable condition.

The two men and four women aged between 36 and 51 developed symptoms of ciguatoxin poisoning including numbness in their arms and legs, diarrhea, abdominal pain and vomiting two to 15 hours after eating coral reef fish during a banquet in a hotel in Tsuen Wan on May 1. 

To prevent ciguatera fish poisoning, people should observe the following measures:

* Coral reef fish should be purchased from reputable and licensed seafood shops. Do not buy it when the source is doubtful.
* Eat less coral reef fish, especially fish weighing over three catties.
* Eat only a small amount of coral reef fish at any one meal and avoid having a whole fish feast in which all the dishes come from the same big coral reef fish.
* Avoid eating the head, skin, viscera and roe of coral reef fish which usually have higher concentration of toxin.
* When eating coral reef fish, avoid consuming alcohol, peanuts or beans as they may aggravate ciguatoxin poisoning.
* Seek medical treatment immediately should symptoms of ciguatoxin poisoning appear.