2:30 p.m. on the same day.

Lianhai Center for Disease Control and Prevention, Emergency Office.

Gu Yanan received the test report from the laboratory.

In the morning, a fried sea screw from the food poisoning specimen from Dongcheng District was sent to Dongcheng District, and stone clam toxin was detected in the body fluid samples of 7 patients and one deceased.

Section Chief Li of the laboratory called at the same time, "There is a weaving snail in the fried sea screw sent in the morning, this kind of small conch is prohibited by the state, I wonder if the food stall was mixed in by mistake or knowingly?" If it is not dealt with in a timely manner, more people will be victimized. ”

Gu Yanan: "Okay, I will feed back the test results from the laboratory to the Dongcheng District Disease Control and other competent authorities, and someone will follow up on the situation." ”

Ending the call with the laboratory, Wang Xiaoxiao stared at the computer and suddenly shouted, "Sister Yanan, look at the epidemic system, just two minutes ago, 6 food poisoning outbreaks were reported in the system one after another, involving three districts, Dongcheng District, Binhai District and Development Zone. ”

Gu Yanan immediately logged into the epidemic system, and sure enough, as Wang Xiaoxiao said, six suspected food poisoning epidemics were reported in just two minutes.

Zhou Lao sighed calmly, "Qingming snail, strong as a goose, this is a common saying in the south, and we even have this custom in Haishi."

Before and after the Qingming Festival, all kinds of conch meat are fatty and delicious, which is the best time to eat. Many people will buy a few catties of conch at home in this season to cook and eat, this conch is divided into large conch and small conch, if you eat small conch may be mixed with poisonous snails.

Snails are prone to accumulation of plankton toxins in the ocean, especially clam toxins.

Stone clam toxin is one of the nervous marine toxins, as long as people eat a little bit will produce neurotoxic effects, manifested as numbness of the lips, paralysis of the limbs, bruising all over the body and other symptoms different from general bacterial food poisoning, if the intake is too much, there will be death cases.

This kind of food poisoning outbreak has also encountered one or two cases every year in the past, but this year coincided with the outbreak of red tide, not only the whelk, but also other commonly eaten conch species will also enrich the marine toxins in the red tide, and it is reasonable that the number of food poisoning cases has increased. ”

Zhou Lao's analysis was clearly organized, but Gu Yanan still felt uneasy.

"When a number of food poisoning cases broke out at the same time, we must first determine whether they were caused by eating conch contaminated with marine toxins, and if so, the contaminated conch should be dealt with in a timely manner and the public should be warned, if not, there may be other sources of pollution, and we must also investigate clearly." Gu Yanan decided to start an investigation.

"What now? Are all reported cases of food poisoning investigated? However, this time there was a bit of a lot of reporting, and our CDC emergency team was understaffed. Xiao Chu asked worriedly.

"There is no need to go to the scene first, first contact the disease control in various counties and districts, and let them send all the food poisoning specimens to the municipal disease control laboratory, and among these specimens, pay attention to whether there are conches, especially whether there are snails."

Gu Yanan assigned the task, and soon, each county sent the specimens of the food poisoning cases in the jurisdiction to the city disease control, and at the same time, the corresponding flow information was sent.

In the municipal emergency office, several members of the emergency team were divided into groups to reorganize.

Gu Yanan found a problem in all the flow survey materials

Four of the six cases of food poisoning were caused by conch consumption, but two were cases of food poisoning at home level, and they had not eaten at restaurants or food stalls, nor had they eaten conch recently, or even marine fish and other fresh seafood.

These two cases of food poisoning, which have never eaten seafood, are not related to other cases? Is it a case?

Looking at the symptoms of the patients in the survey data, they all have symptoms of numbness of the lips, paralysis of the limbs, abdominal pain and diarrhea, which are the same as the symptoms of food poisoning caused by clam toxin.

What was the source of the clam toxin in these two family-based food poisoning cases?

Several members of the emergency response team were in the office discussing the cause.

Zhou Lao: "The news released by the Oceanic Bureau before said that the current red tide has lasted for more than 20 days in the waters near Lianhai City, and even if it spreads to the shore, it will take two or three days, and the fish or shellfish in the depths of the ocean, as long as they live on plankton, may be enriched in this food chain, so as long as someone has eaten any link in this food chain, they may be attacked by the toxin." ”

Gao Fei agreed with Zhou Lao's statement, "Well, as long as you have eaten marine products, you may be poisoned." ”

Wang smiled: "Marine products? This is also too wide, and even more than half of the things on the dining table of ordinary citizens in Haishi are related to the ocean. ”

Lu Li touched his stomach, "What about the oyster tofu soup I ate last night." ”

"I eat more than you do." Zhang Xiaoxiao touched her own stomach, "I feel okay, what about you?" Is there any discomfort? ”

"I'm fine, too, which means that the oysters we ate last night are fine."

Wang smiled: "Yesterday, the owner of the seaside restaurant said that their oysters were fresh and had just been fished out of the sea. According to this statement, this oyster should also be enriched with some marine toxins, how can we be okay if we eat so much? ”

Lu Li: "Only the marine life in the red tide area will be affected, and although the red tide lasts for a long time, the scope involved is not too large. ”

Xiao Chu was still staring at the flow information, "The two cases of not eating conch have one thing in common, they have both eaten hot pot balls, including fish balls." ”

Most of the fish balls circulating in the Lianhai market are made from marine fish, so fish balls are also considered one of the seafood products.

At the time of the emergency response team's discussions, three more outbreaks of food poisoning with similar symptoms were reported on the pandemic website.

This food poisoning outbreak is also reported too frequently.

The newly reported information on the epidemic of food poisoning has also been sent one after another, Gu Yanan took a look at it and found that the new cases had not eaten conch, but one thing in common was that they had eaten seafood such as fish balls or shrimp paste.

It will take some time for the samples of food poisoning cases in various counties to be sent to the laboratory and the results will be available, so Gu Yanan decided to trace the source of the fish balls and shrimp paste before the results are available.

By questioning several patients with food poisoning cases, we were able to find the place where to buy the fish balls.

Then find the manufacturer of the fish balls according to the seller of the fish balls.

In several cases of food poisoning, the fish balls consumed by the patients were all from the same manufacturer, the Long Island Mermaid Marine Products Processing Factory.

Long Island is an independent island off the east coast of Lianhai City, more than 10 nautical miles from the coast, there are thousands of permanent residents on the island, large and small seafood processing enterprises are countless, and even a household can be called a seafood production workshop.

After checking the records of the industrial and commercial authorities, the emergency response team found that the Long Island Mermaid Marine Products Processing Factory was located on Long Island, and the industrial and commercial authorities provided the detailed address of the manufacturer.