After Gu Jiashu finished talking about the situation in the hospital, Gu Yanan began to talk about the CDC's investigation.

"At present, 36 children have been found in Lianhai City, and in accordance with the principle of territorial management, each county and district CDC has conducted a case investigation of each child.

In addition to surveying the parents of the children, an on-site survey of their families was conducted.

The patients had no history of contact with each other, and the parents of the children did not know each other, so it is inferred that person-to-person transmission of the outbreak is unlikely.

After comparing the results of the case investigation of all the children, it was found that all the children had used the same baby powder - baby powder.

The local county CDC has sampled the talcum powder used by the child, and the talcum powder is currently being checked in the laboratory, and the results will take some time to come out.

In addition, descriptive studies through case studies show that cases in Lianhai City are mainly concentrated in Beicheng District and individual towns in the west, showing a cluster distribution. ”

Nan Zhiqiao, as an investigator sent by the National Disease Control and Prevention, after listening to the explanation of the epidemic by the hospital and the person in charge of the disease control, put forward an opinion, "Continue to conduct follow-up investigations on the common exposure factor of the children - baby incense powder, including investigating its manufacturer, production batch number, sales area, and sales."

The hospital makes a pathological autopsy report of the deceased child as soon as possible, which helps the laboratory to determine the specific type of poison. ”

After the first meeting of the emergency response team, each department began to work separately.

Gu Jiashu went back to the hospital to ask for the consent of the patient's family, but due to emotional reasons, several family members did not agree to perform an autopsy on the child at first.

The health supervision department went to the market to investigate the manufacturers of the baby powder used by the children and the sales in the market.

Nan Hanfei followed Gu Yanan, and as soon as he left the conference room, he asked her in a low voice, "Yanan, where are you going?" Hospital? Or follow the health supervision department to inspect the manufacturers that produce baby powder? ”

Gu Yanan thought about it, if there is a problem with the production of baby incense powder manufacturers, then on-site sampling or viewing the production surveillance video can be identified, and the pathological autopsy of the child in the hospital will help determine the cause.

"I went to the hospital and asked Gu Qingcen to go to the production plant with the health supervision department, and Zhou Lao Gao Fei and the marketing bureau to investigate the sales and circulation of baby incense powder in the market."

——

The First People's Hospital of Lianhai City, autopsy room.

With the consent of the deceased child's family to sign, the pathological autopsy of the deceased child begins.

The chief surgeon of the forensic medicine department participated, Gu Yanan, Gu Jiashu, Nan Zhiqiao and Nan Hanfei participated.

At the autopsy, different organs and tissues of the deceased child were sampled in preparation for poison testing.

Samples of brain and spinal cord tissue were collected for light microscopy, and vacuole-like changes were found in the white matter.

This pathological change is similar to that of a spongy brain injury.

Seeing the results of the pathological autopsy of the deceased child, Nan Zhiqiao seemed to suddenly remember something, and whispered: "This pathological change of nerve tissue reminds me of a drug used to treat liver fluke disease in China in the 60s of the last century, which will have strong side effects on patients, one of which includes spongy brain damage." ”

Gu Yanan immediately reacted to the past cases that Nan Zhiqiao was referring to, and said casually, "Hexachlorophenol!" ”

Nan Zhiqiao nodded, "Yes, it is hexachlorophenol, hexachlorophenol is an antibacterial agent, which was widely used as a preservative for various daily chemical products in the fifties and sixties of the last century, and later because it has great toxic side effects on people, so it is now banned in daily chemical products, and it will only appear in some medical drugs." ”

Gu Jiashu asked, "It is strictly forbidden to add hexachlorophenol as a preservative to the talcum powder used by infants, and when the disease control and control did a case investigation, it was found that the baby fragrance powder used by the children was produced by regular manufacturers, and it stands to reason that this problem will not occur." ”

Gu Yanan: "It stands to reason that this is the case, but what the actual situation is can only be determined by waiting for the results of laboratory tests and the results of the manufacturer's investigation. ”

After the autopsy, Gu Yanan walked out of the autopsy room and took the autopsy specimen to return to the CDC laboratory for testing of the poison hexachlorophenol.

In the corridor outside the autopsy room, the family members of the deceased children were waiting there, and the family members were a little emotional.

The parents of the deceased child were arguing about something, and Gu Yanan only listened to a few words and understood a general idea.

In order to find the cause as soon as possible, the mother of the child agreed to conduct an autopsy on the deceased brother, but the father of the child was out of town at the time and did not know the situation, and now rushed back, knowing that the hospital had dissected the child, and he could not accept it ideologically, and was arguing with the people around him.

When the child's father saw Gu Yanan being the first to come out of the autopsy room, still carrying a large box in his hand, he immediately became emotional, stepped forward and grabbed Gu Yanan's collar, and roared: "What happened to your son?" Did you dismember him? Why are you so cruel......"

Gu Yanan was taken aback by the sudden outburst of emotions from the family, and subconsciously wanted to retreat, but heard a "bang" sound, and the clothes were torn by the child's father.

The summer clothes were already very thin, and the child's father was very excited, and with a hard hand, Gu Yanan's clothes were torn off two buttons, and the clothes on his chest were also torn out, and the white skin on his shoulders and left chest was exposed.

Nan Hanfei followed Gu Yanan out of the autopsy room and saw the scene in front of him, Gu Yanan's clothes were torn by the patient's family.

Nan Hanfei rushed forward with a brisk step, pushed away the family members, and at the same time took off his coat and draped it on Gu Yanan.

"Yanan, are you alright?"

Gu Yanan shook his head, tried to stabilize his mind, and looked to the side, where his brother Gu Jiashu and Nan Zhiqiao were standing beside him.

"Brother, you can explain to the family, I will immediately send the specimen back to the CDC and make the results of the poison test as soon as possible."

Although Gu Jiashu was worried about the little sister, he immediately calmed the emotions of the child's family, explaining that the family can see the child now, and there is no change in the appearance of the deceased child, but only a small part of the samples were taken for laboratory testing, and the test results are conducive to the treatment of other children.

Thinking that the younger twin sons, who were still sick, had hope of being cured, the family's mood gradually stabilized.

——

Lianhai City, Beicheng Industrial Park, Baby Powder Production Company.

At the same time as the pathological autopsy of the deceased child was carried out in the hospital, the baby incense powder production company located in the industrial park of Beicheng District, Lianhai City, was also raided by the epidemic investigation team.

A large number of baby incense powder in production was found in the production workshop, as well as different batches of baby fragrance powder in stock.

The surveillance video and production records of the production workshop were retrieved and checked one by one.

Surveillance footage shows that during a production process 10 days ago, a worker mistakenly added half a barrel of HCP powder from another production line as talcum powder raw material to the production process of baby powder, resulting in the batch of baby powder being contaminated with HCP.