"Yes, my husband and the staff have them in the store." The proprietress responded happily, "It's all in the drawer at the front desk, I'll find it for you now." ”

The proprietress took out a 16K-sized notebook with yellowed paper from the front desk drawer and flipped to one of the pages, "The information of the staff in my store is here, plus my husband, there are 12 people, 4 cooks, 2 dishwashers, and 5 waiters." ”

Gu Yanan glanced at Gao Fei, he immediately understood, picked up his mobile phone to take a picture of this page of information, and prepared to continue the investigation according to the clues.

Gu Yanan asked the proprietress again, "Are all the employees hospitalized?" Which hospital to live in? ”

"I heard from my husband that there was a cook and a waiter who were in serious condition and were transferred to the First People's Hospital, while the others were hanging water in the community hospital."

"What information about the chef and waiter who transferred to the hospital?"

"It's these two, the chef's name is Wang Dawei, and the waiter's name is Li Ming." The proprietress explained, pointing to the two names in the notebook.

Gu Yanan immediately called Lu Li, who was still doing a flow survey at the First People's Hospital.

"Lu Li, there are two people who need you to focus on investigation, they are the staff of the problem hotel, and I will send you the list in a while, and the flow of these two people should be as detailed as possible."

"Okay, understood!" Lu Li's voice was very noisy, as if he was in the emergency hall of the hospital, there were patients moaning in pain, and the nurse raising her voice to remind him.

Hanging up the phone, Gu Yanan, Zhou Lao, Gao Fei and Section Chief Zhang began to conduct detailed samples of Lianhai Tucai Restaurant.

From the various fresh dishes stocked in the back kitchen, leftovers, frozen food in the refrigerator, various spices on the stove, water used, utensils, and even dirt in the corners, they are all collected one by one.

With the naked eye alone, there is no problem with it, and the collected samples need to be brought back to the CDC laboratory for further testing.

Before leaving from Lianhai Native Restaurant, Gu Yanan specially instructed the proprietress to "Don't move the things in the store until the reason is found." ”

The proprietress promised again and again, "Don't move, don't dare to move, I don't want to get sick too." ”

——

Lianhai Center for Disease Control and Prevention, Experimental Building.

Gu Yanan asked Zhou Lao and Section Chief Zhang of Dongcheng District CDC to continue to go back to the community hospital to investigate the situation of the staff of the Tucai Restaurant, while she and Gao Fei returned to the CDC Experimental Building with the newly collected specimens, ready to be tested by the physical and chemical team.

The specimen is first handed over to the sample collection office for registration.

Gu Yanan wanted to know the results of the physical and chemical tests on the patient's specimens in the morning, and everyone went to the laboratory building, thinking that they would go directly to discuss the next test scope with the chief of the laboratory department.

After passing through the laboratory office, I heard a conversation between two young boys, Xiao Xiao and Xiao Gao, members of the microbiome.

Xiao Gao rolled up his sleeves and roared urgently: "Draw my blood, I will cooperate." ”

"Nope." Less than shaking the head.

"Why not, I'm blood type O."

"It's not a matter of blood type." Less than or shaking head.

Xiao Gao was anxious, "I'm so cooperative, don't you smoke?" You like to struggle and rebel? What kind of flavor do you have? Do you have love? ”

Less than didn't speak, but still shook his head.

Xiao Gao and Xiao Xiao of the Laboratory Department worked at the CDC in the same year, but the two had completely different tempers, Xiao Gao was straightforward and fast-talking, and his temper was slightly impatient. It's less than usual, but it has its own principles for doing things steadily.

Seeing that the two were about to quarrel, Gao Fei passed by and interjected and asked, "Everyone is a colleague, what are you two arguing about?" ”

Xiao Gao saw that someone from the surgeon was coming, and immediately pulled over to comment, "Gao Fei, you come over to comment, I am type O blood, which can be used for blood clotting tests, but it is less than not using my blood, so I have to use the blood of that poor guinea pig." ”

Goofy looked at Xiao and saw him pick up a small cage from the ground, and there were two small pure white guinea pigs in the cage.

"SPF-grade guinea pigs, special for experiments, just arrived today, specially used to take blood from the heart for blood coagulation tests." Less than explained.

Xiao Gao: "How pitiful the guinea pigs are, you see they are still shivering, how many guinea pigs have you killed in the past few years?" You're going to draw my blood this time. ”

"This is the fate of laboratory animals, isn't there a monument to experimental animals in the backyard of our unit, and I go to plant flowers every year."

"Pump mine." Xiao Gao continued to insist.

"No, you're not a lab animal." Less than also sticking to their own principles.

Gu Yanan understood the focus of the argument between the two and said: "It's a good thing to be caring, but Xiao Gao is not satisfied with the SPF level, and the experiment still has to be done according to the SOP." ”

Xiao Gao silently withdrew his hand, but Xiao Xiao grabbed his arm, and said with a smile: "Your blood is kept first, type O blood is the blood type of Daai, and when I am injured one day, I still point to you to donate blood to me." ”

"Go, go, how can I curse myself to be injured, I'd rather never have this chance in my life."

Gu Yanan: "What about your Section Chief Li?" ”

"The physical and chemical group has just released the experimental results, and Section Chief Li has gone over to see the results."

Physicochemical laboratory.

Gu Yanan swiped the door of the laboratory with his identity card, Section Chief Li heard the voice, and was staring at the instrument screen, but turned around to see Gu Yanan and Gao Fei coming in.

Section Chief Li hurriedly beckoned, "Director Gu, come here, there is a major discovery." ”

Atomic absorption spectrometer, a specific peak line appears on the screen.

Comparing it with the characteristic spectral lines of various metals, Gu Yanan exclaimed.

"Thallium?!"

"That's right, it's thallium metal, and thallium metal was detected in the blood samples of patients sent by the Dongcheng District Disease Control and Prevention last night." Section Chief Li said affirmatively.

Goofy exclaimed: "Is it thallium poisoning? Since I came to work for disease control, I have never encountered thallium poisoning, and it is such a large-scale thallium poisoning in the population. ”

Section Chief Li: "Don't talk about Gao Fei, I have been working in disease control for almost 20 years, and I have never encountered this situation." ”

Gao Fei: "I have read the literature on thallium poisoning, in the past, thallium compounds were used to add hair dyes and ointments to treat skin diseases, and occasionally thallium poisoning occurred, and then there were several more well-known thallium poisoning incidents, will this thallium poisoning epidemic in Dongcheng District, Lianhai City, be poisoning?" ”

Section Chief Li frowned, "Revenge on society? No way? Moreover, the control of thallium metal in China is very strict, and ordinary people cannot get it, and only special research institutes and laboratories will have it. ”

Gu Yanan: "Now in addition to finding out the source of thallium, it is also necessary to notify the hospital as soon as possible to detoxify the patient, as thallium metal will leave permanent damage if it stays in the body for a long time, and may even be fatal." ”

Section Chief Li: "It is our CDC's responsibility to find out the source of the poison, rest assured, the laboratory department will test the sample you just sent now, and the clues should be found after the results come out." As for curing the sick and saving people, the hospital matters. ”

Gu Yanan called Lu Li first and told him the test results from the laboratory.

Lu Li also conducted a detailed investigation of the critically ill cooks and waiters in the Tucai restaurant at the First People's Hospital, and after knowing that it was thallium poisoning, Lu Li was still taken aback, "Thallium poisoning?!" Okay, I'll tell the doctor right away. Also, the chef of the local restaurant was assigned to the infectious disease department, and Dr. Gu was right next to me. ”