Gao Fei recorded everything that Xiao Ming's mother said on the investigation form.

Xiao Ming's mother saw that Gao Fei didn't react next, just wrote something on the paper, worried that Gao Fei didn't believe what she said was swimming that caused her son to catch a cold and fever, and then added, "My son's pneumonia must be related to swimming, if you don't believe it, you can ask Li Zixuan in the next bed, his family and my son are in a swimming training class, he also swam for a few days and was hospitalized with cold and pneumonia, the same situation as my son, if my son is an individual case, then how could Li Zixuan get the same disease so coincidentally?" There must be a problem with the swimming pool, the swimming pool is on the 1st floor of the basement, the central air conditioning is very low, and the water temperature is quite hot......

Xiao Ming's mother chattered endlessly, and Li Zixuan's grandmother on the other side also echoed, "My family Zixuan also participated in a swimming training class, and after swimming two or three times, he began to catch a cold, and now it has become pneumonia, I think about it, it must be related to swimming, doctor, my grandson can't have the flu, right?" ”

Gao Fei did not answer Li Zixuan's grandmother's question directly, but asked Li Zixuan about his usual situation, "Zixuan, do you usually find students with the same symptoms as you in the school class?" What about the family? Do you have a fever, a cold or a sore throat? ”

Li Zixuan's symptoms were milder than Li Ming's, but his voice was also a little hoarse, "I've been on leave for three or four days, and I don't know the situation in the class, but before I got sick, the classmates in the class were fine, huh...... Family ...... My grandmother was also a little unwell, and she said she had a sore throat lately. ”

Gao Fei looked at Grandma Li Zixuan and found that Grandma Li Zixuan's eyes were a little red, which was a typical symptom of conjunctival hyperemia.

Gao Fei asked, "Grandma Zixuan, have you been feeling unwell lately, such as having a fever and a sore throat like Zixuan?" ”

Grandma Li Zixuan rubbed her eyes and touched her neck again, "I really feel a little uncomfortable when asked by the doctor, that is, my grandson has a cold and fever, and my throat is not very comfortable, it may be infected by my little grandson, usually my grandson is brought by me, his parents are busy with work, Zixuan lives in my house, I am in good health, but my throat is sore, no fever, it's fine." ”

Gao Fei took out the sampling tube and blood collection needle from the sampling box, "Grandma Zixuan, I want to collect a tube of blood and nasopharyngeal swab for you." ”

Grandma Li Zixuan asked in surprise: "You also want to check me?" I'm fine, and this test costs money, right? ”

"It doesn't cost money, it's free, we mainly want to identify the pathogen that infects your grandson, find the source of infection, and facilitate the diagnosis and treatment of your grandson."

As soon as she heard that it was conducive to treating her little grandson, and it was free, Grandma Li Zixuan immediately cooperated very much.

After collecting samples and asking about the patient's condition, Gao Fei came out of the infectious disease ward, and before returning to the CDC laboratory, he called Lu Li first.

"Lu Li, you and Wang Xiaoxiao are still in Binhai Primary School, right?"

"Well, you've finished taking samples from the People's Hospital?"

"As soon as I came out of the ward, I learned about a situation where there was a student named Li Ming in the second class of the third grade of Binhai Primary School, who recently had cold symptoms that were typical flu-like cases, and now he has developed pneumonia and is living in the infectious disease department of the People's Hospital."

Lu Li was surprised, "Class 2 of the third grade? This time, the class where the suspected influenza epidemic reported by the Dongcheng District Disease Control and Control is the third grade 2 class, there are already 16 students with typical symptoms, of which 6 are at home and 10 are still in school, we took nasopharyngeal swab samples from the whole class in the class, one of the students who asked for leave is Li Ming, according to the time of his onset should be the initial case of this suspected influenza epidemic. ”

Gao Fei: "I also learned about a situation here, there is also a fourth-grade primary school student named Li Zixuan in the same ward as Li Ming, he studied in Daqing Road Primary School in Dongcheng District, in my impression, Daqing Road Primary School and Binhai Primary School are separated by four or five blocks, the geographical location is not close, but the two people are almost at the same time, and the symptoms are the same, the most critical point, Li Zixuan and Li Ming participated in a swimming training class in the same swimming pool a week ago, and their families reported that both of them had cold symptoms after swimming, I suspect that the outbreak may be related to this swimming pool, which is called Blue Sky Swimming Pool, which is located in the commercial street next to Binhai Primary School. ”

Lu Li realized that an important clue was found, "Okay, I'll ask any students from Binhai Primary School here who have been to the Blue Sky Natatorium, and take a look at the connection between this case and the natatorium, as for Daqing Road Primary School and the Blue Sky Natatorium, they will also go over to investigate, but this situation should be reflected to Sister Yanan first, no matter what, first determine the pathogen and send the specimen back, the laboratory should have the results of the first specimen sent to Dongcheng District." ”

——

Lianhai Center for Disease Control and Prevention, P3 Laboratory.

Gu Yanan and Zhou Lao are wearing biosafety protective suits in the P3 laboratory to search for relevant bacterial strains according to the data catalog.

After Gu Yanan sent away his old classmate Li Yafei, he began to verify the bacterial strains in the current disease control laboratory, among which the highly pathogenic bacterial strains and specimens were kept in the cold storage of the P3 laboratory.

According to the catalogue of materials, most of them were checked, and after checking most of them, Gu Yanan found that a sample of Ebola virus and related antibody serums that had been kept before were not in their original location.

Gu Yanan's first reaction should be that when someone else was doing an experiment, he changed the position of this specimen, but after changing the position, he did not mark it in the data catalog, and after leaving the laboratory, he should ask the relevant personnel who had done experiments in the P3 laboratory to confirm it.

This kind of misplacement of specimens and strains has also happened before, so Gu Yanan remembered it and felt that the training of laboratory staff in this area should be strengthened in the future.

The number of bacterial strains and specimens stored in the cold storage of the P3 laboratory is huge, and Gu Yanan and Zhou Lao alone cannot verify them for a while.

After Gu Yanan found the strain he needed, he went out of the P3 laboratory with Zhou Lao.

Zhou Jie: "What are you going to do if you don't find the Ebola virus specimen?" ”

"Ask the others in the P3 lab first, see if anyone has touched the specimen but didn't register, and after confirming, the next time you enter the P3 lab, you can search for a purpose."

"Well, that's all there is to it for now."

It was almost noon to get off work, and when I returned to the emergency office, Lu Li, Wang Xiaoxiao and Gao Fei were also there.

Lu Li reported the investigation at Binhai Primary School and Gao Fei's investigation in the Infection Department to Gu Yanan one by one.

Gu Yanan's first reaction after listening to the report, could it be that the swimming pool is hot?

Zhou Lao: "The pool is hot? Are you saying that this suspected flu outbreak is not the flu but an adenovirus infection? ”

"It is very likely that adenovirus can be transmitted through swimming pool water, and if the blue sky swimming pool is not completely disinfected, it is very likely to spread adenovirus, and the initial symptoms of adenovirus infection are very similar to that of the flu."

"What now? Do you want to go to the Blue Sky Swimming Pool? ”

"Well, after eating, Zhou Lao and Gao Fei went to the Blue Sky Natatorium with me, Lu Li and Wang Xiaoxiao went to Daqing Road Primary School, the main content of the flow survey at Daqing Road Primary School is to investigate whether students with fever symptoms have been to the Blue Sky Natatorium, and the onset time, the Blue Sky Natatorium is mainly sampling, asking about the health of the members of the swimming training class, and focusing on checking the disinfection records of the pool water in the swimming pool."