The Centre for Health Protection is investigating two food poisoning cases involving 14 people.

Those affected, a man and 13 women aged 13 to 41, developed abdominal pain, nausea, vomiting and diarrhoea three to 40 hours after dining at a Mong Kok restaurant on April 8 and 10.

Two sought treatment at Tseung Kwan O Hospital, one from Alice Ho Miu Ling Nethersole Hospital and one from Princess Margaret Hospital. Six others consulted private doctors. They are in stable condition and none required hospitalisation.

Initial investigations showed bacterial contamination was the likely cause of the outbreak.

To prevent food-borne diseases, people, especially food handlers, should:

* clean and cook food thoroughly before consumption, particularly seafood;

* wash hands before eating and after going to the toilet;

* handle raw and cooked food with separate utensils to prevent cross contamination;

* keep raw and cooked food separately;

* store food in the refrigerator (at 4 degrees Celsius or below) and adequately reheat leftover food before consumption; and,

* keep the environment clean.