The doctor's judgment was the same as Gu Yanan's, ruling out the possibility of bacterial and viral food poisoning, and there was only one chemical left.

Gao Fei added, "But the doctor said that there are many types of chemical poisoning, and it is difficult to detect, and they can only treat the symptoms now." ”

When the patient's specimen is sent back to the CDC laboratory, a general testing range must be determined with the laboratory staff before the test can begin.

Gu Yanan found the doctor who received the consultation, and there were some questions that needed to be asked face-to-face.

Because it was a large-scale collective poisoning incident, the directors of several departments consulted together, and Gu Yanan also participated.

The results of the discussion did not change the treatment plan, but based on the symptoms of the students, it was believed that it was likely to be neurotoxic substances, either because the food eaten by the students was contaminated with certain bacteria and produced neurotoxic substances, or because the actual food itself carried some neurotoxic substances.

The discussion among the experts is only speculation, and it is a contradictory and interdependent process to determine the scope of testing for the laboratory and to speculate based on the patient's symptoms and flow data.

After coming out of the discussion, Gu Yanan wanted to find more clues from the on-site investigation data, so he called Lu Li, who assisted Dongcheng District Disease Control and Prevention in the university town of Dongcheng District.

Lu Li on the other end of the phone had been busy with the Dongcheng District Disease Control and Control people in the university town for an afternoon, and before he had time to eat dinner, he followed the mild patients to the Dongcheng District Community Hospital, and was asking the sick students one by one what they had eaten before the onset of the disease and what items they had touched, when they received a call from Gu Yanan.

Lu Li came out of the busy and noisy community hospital lobby and found a secluded corner to answer Gu Yanan's call.

"Sister Yanan, the situation on our side is relatively serious, the number of symptomatic students has increased to 124, the mild patients are concentrated in the community hospital for symptomatic treatment, and the canteen in the university town of Dongcheng District has been temporarily closed. At noon, we took samples of the leftover meals in the canteen and sent them to the laboratory of our Municipal Center for Disease Control and Prevention, stir-fried vegetables, cold dishes, soups, and various pasta and condiments, adding up to more than 60 kinds of food, which were enough to be screened for a while. ”

"Was there anything suspicious during the on-site investigation?"

"I looked suspicious, and after the initial investigation, we targeted a cafeteria in the university town of Dongcheng District, where all the poisoned students began to get sick one after another. The canteen where the accident occurred was very unhygienic, everything was piled up together, and the garbage was not thrown away. ”

"Did you sample the garbage?"

"I picked them and sent them back to the lab. More than these 60 samples, I am more worried that my colleagues in the lab will find the suspicious one among the many chemical poisons, which is tantamount to looking for a needle in a haystack. ”

"I've talked to clinicians and they suspect neurological chemical poisons, so I asked the lab to focus on testing a few of them, including botulinum toxin."

"It's good to have a suspicious object, Sister Yanan, I still have a lot of investigation case forms to fill out here, and I will pack it and send it to you as soon as I finish filling it out."

From Lu Li's words alone, Gu Yanan couldn't find more clues, and sometimes he had to go to the scene himself.

——

Day 2 at 8 a.m.

Lianhai Center for Disease Control and Prevention, Emergency Office.

Wang Xiaoxiao is sorting out the information of the plague epidemic in the office, and from time to time on the epidemic website to pay attention to whether there is any food poisoning reporting information related to the university town in Dongcheng District.

Mr. Zhou handed over a stack of materials to Wang Xiaoxiao for archiving in the villa area where Li Tianlong was located in Xicheng District, and sighed: "Although Li Tianlong is a big aftermath of this plague epidemic, it was discovered in time, because he was in contact with a relatively small number of people by car, and now all the close contacts have been identified and observed, and the trend of the spread of the plague has finally been controlled." ”

Wang Xiaoxiao divided the information into categories again, and also sighed: "Fortunately, it was controlled in time, I don't want to go back to the days of the first-level response, but I don't know how the food poisoning is going in the university town of Dongcheng District this time?" ”

On the open computer screen, a prompt message popped up on the Internet, and Wang Xiaoxiao muttered quietly while immediately opening it to view.

"Don't be a plague patient, don't be a ......"

The prompt message shows that there is a food poisoning incident, the location is still in Dongcheng District, but it is not a student in a university town, but a family of 5, and the unit reported is a community hospital.

"It's good that it's not the plague."

Wang Xiaoxiao just felt relieved, but then he became nervous again, now everyone is dealing with the food poisoning incident in the university town of Dongcheng District, and the system suddenly reported such a case, and it is necessary to send out another person to investigate.

However, how to transfer manpower is a matter for the leaders to solve, Wang Xiaoxiao saw the reported news and immediately called Gu Yanan.

The phone was connected, and Gu Yanan had already met with Lu Li at the Dongcheng District Community Hospital early in the morning to conduct a survey of many students with mild symptoms.

"Sister Yanan, there was a newly reported food poisoning incident on the Internet of the epidemic system just now, the location of the incident is also in Dongcheng District, and the hospital reported is Yanhe Community Hospital, and I have sent a screenshot of the specific information to your mobile phone."

Gu Yanan pulled out the information on his mobile phone and looked at the location first, the place of the incident was not far from the Dongcheng District Community Hospital where they are now, only 4 streets away.

Looking at the number of people involved, a family of 5, the onset time was around 1 pm.

Finally, looking at the symptoms, the five people had symptoms of dizziness, nausea and vomiting, and diarrhea.

This symptom is the same as that of the poisoned students in the university town of Dongcheng District.

Isn't there a connection between the two food poisoning incidents?

If there is a connection, then the source of poisoning is not limited to the problem cafeteria in the university town, and the source must be investigated as soon as possible, otherwise there will be more cases of poisoning.

Gu Yanan decided to immediately investigate the newly reported poisoning incident of a family of five.

According to the principle of territorial management, this new food poisoning epidemic is under the jurisdiction of Dongcheng District Disease Control and Prevention, but because of the University Town incident, Dongcheng District Disease Control has not been able to mobilize manpower at all, and Gu Yanan decided to take the city disease control team to investigate first.

——

9:20 a.m.

Salt River Community Hospital.

A family of five was treated in a community hospital.

Gu Yanan and Lu Li questioned five people in the ward.

The family of 5 is Grandpa Li, Grandma Li, Mom and Dad and a 6-year-old grandson.

Because of the recent end of the plague emergency response, schools are opening one after another, and kindergartens for little grandchildren have also started.

Last night, the grandparents cooked a few dishes, ready to celebrate the opening of the school for the little grandson, who knew that not long after eating, the family of 5 began to feel dizzy, vomiting and diarrhea, and the family went to the nearest community hospital to see a doctor.

Gu Yanan focused on asking about the food that the family of five had eaten last night.