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| Author | Dr. A Amato Gauci MD, MSc |
| Abstract | During the last week of September 1990, 32 cases of histamine poisoning were described in a national outbreak in Malta. The cause was established to be spoiled dorado (dolphin fish). Levels as high as 280mg/100g of fish were recorded. This was the first time this condition was described in these islands. This outbreak was associated with an unusual heat wave that occurred during that period abd which may have contributed to the cause of this outbreak. There was a strong correlation between the daily temperature and the number of cases identified. The actual stage from catch to consumption when spoilage occurred could not be definitely established. It is likely that this occurred both on small fishing boats as well as in fish market stalls or street fish hawkers vans. The medical profession was informed about this syndrome. A press release informing the general public on how to identify spoiled fish was released. Sixty-five fish hawkers throughout the country were inspected by district health inspectors but no signs of spoilt fish were found. Recommendations for tighter regulations on the sale of fish and on upgrading the government cold stores were prepared. Surveillance was instituted for further case finding and to monitor the outcome of these measures. Samples are now routinely tested locally for histamine content. |
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| Key words | dolphin fish, dorado, scombroid, scombroid, histamine poisoning |