Hong Kong Secretary for Food and Health York Chow said the melamine may have come from feed given to the chickens that laid the eggs.
香港食物及卫生局局长周一岳表示,三聚氰胺可能来自蛋鸡的饲料。
Health chief York Chow said there was no sign yet that the virus has been spread between humans and that investigations were focusing on poultry as being the source of the infection.