The manager's face was even more embarrassed, "This ...... Well, our swimming pool has a rule, sick people can't go to the pool, but this is only up to the customers to be conscious, how can we check the body of customers every day. ”

Zhou Lao muttered quietly, there is neither a management system of disinfection operation procedures, nor a health monitoring system for students and coaches, who will have an accident if you don't have an accident?

Zhou Lao knew that he couldn't ask for anything more from the manager, so he opened the sampling box he brought with him and prepared to collect water samples from the swimming pool.

Customers who were swimming in the pool began to whisper what was going on when they saw CDC staff.

The manager explained to the customers with a smile on his face, "The routine inspection will end soon, so you don't have to worry about it." ”

Zhou Lao took water samples, and at the same time tested the residual chlorine of the water quality of the swimming pool on the spot, and the final test results showed that the residual chlorine content of the swimming pool water was only 0.01~0.02 mg per liter, which was significantly lower than the national standard of 0.30~0.50 mg per liter of the swimming pool water road.

The pool water here is not thoroughly disinfected!

After Zhou Lao finished his busy work, after greeting Gu Yanan, he first sent the water sample back to the CDC laboratory for other tests, and then helped Gao Fei to search for cases.

——

Lianhai Center for Disease Control and Prevention, Laboratory.

According to Gu Yanan's requirements, the colleagues in the laboratory carried out various tests on the samples collected from the Blue Sky Natatorium.

First, the swimming pool water was enriched with microorganisms, and the adenovirus nucleic acid was detected, and the result was positive.

Adenovirus was detected directly from the pool water of the Blue Sky Natatorium.

This is direct evidence that this adenovirus outbreak is spreading through swimming pool water.

With laboratory evidence, Gu Yanan directly applied for the temporary closure of the Blue Sky Swimming Pool for disinfection and rectification.

At the same time that Gu Yanan and other departments rectified the Blue Sky Natatorium, Lu Li and Wang Xiaoxiao's flow survey in Daqing Road Primary School in Dongcheng District also had results, and most of the students with fever symptoms in Daqing Road Primary School had participated in the training course of the Blue Sky Natatorium, which confirmed that Daqing Road Primary School was the same as Binhai Primary School, and the students' illness was related to the Blue Sky Natatorium.

Gao Fei and Zhou Lao also got results from their search for cases.

A total of 226 cases, including 121 males and 105 females, were detected in telephone or face-to-face follow-up visits with more than 350 swim course participants and swimming instructors, with clinical symptoms of high fever, sore throat, runny nose, cough and eyelash congestion, and a few cases diarrhoea.

The most important finding of this search for cases was the discovery of the first case, a 12-year-old boy who attended a swimming training course on the first day of the opening of the Blue Sky Natatorium, and on the second day he developed symptoms of high fever with a body temperature of 41 degrees Celsius accompanied by sore throat and runny nose, and was receiving antiviral treatment at a local individual clinic, and his condition is improving.

Goofy found the address of the mountain, collected samples from the mountain in recovery, and brought it back to the laboratory.

In the evening of the same day, the CDC team led by Gu Yanan returned to the CDC from various investigation sites, and the specimens they brought back were also sent to the CDC laboratory.

After on-site investigation and previous laboratory examinations, Gu Yanan already had a rough guess about the outbreak of adenovirus outbreak.

The Blue Sky Natatorium opened a week ago, but the disinfection inside the natatorium is not standardized.

After receiving the first case, the adenovirus on the body of the first case in the swimming pool contaminated the swimming pool water, causing the trainees who participated in the swimming training in the swimming hall to be infected one after another and develop symptoms.

The patient, Li Ming, a student at Binhai Primary School, was infected with adenovirus in the Blue Sky Natatorium and then transmitted the adenovirus to his classmates, causing an outbreak of adenovirus infection in Binhai Primary School.

The patient, Li Zixuan, a student at Daqing Road Primary School in Dongcheng District, was also infected with adenovirus in the Blue Sky Natatorium, and then transmitted the adenovirus to his classmates at Daqing Road Primary School, causing an outbreak of adenovirus infection in Daqing Road Primary School.

Gu Yanan is now waiting for his colleagues in the laboratory to test the samples just sent, and after the results are available, he can write a summary report on the swimming pool fever.

While waiting for the results, Gu Yanan remembered that when he was looking for specimens in the P3 laboratory in the morning, one of the Ebola specimens was not found, and he suspected that it had been put in other locations by other colleagues who had done experiments.

Gu Yanan found his colleagues in the P3 laboratory and asked them one by one, and everyone said that the specimen had not been touched.

Gu Yanan felt strange, wasn't the P3 lab hacked? Specimens stolen? But this is too unlikely, the P3 lab has security measures, as well as surveillance, and there will definitely be an alarm if someone intrudes.

Gu Yanan suddenly remembered that Nan Hanfei had mentioned to her before that someone had reported bioterrorist activities in Lianhai City.

Isn't there really a bioterrorist organization?

The more Gu Yanan thought about it, the more he felt a chill down his spine.

Suddenly, a colleague from the P3 laboratory mentioned to Gu Yanan that there had been an explosion during the renovation of the exterior wall of the P3 laboratory before, and there was a power outage at that time, and someone had entered the P3 laboratory to sort out things.

Gu Yanan felt that this was also very possible, but the specific situation would have to be known after asking Gu Qingcen.

Gu Yanan glanced at the time of the wrist watch.

At this time, Gu Qingcen should have gotten off the plane, perhaps on his way back to his bachelor apartment.

Gu Yanan dialed Gu Qingcen's mobile phone number, and after a few Didi sounds, the mobile phone was connected.

"Brother Qingcen, where are you now? Back in a bachelor apartment? ”

"Just arrived at the apartment and was cleaning up my room."

In the mobile phone, Gu Qingcen's voice was a little panting, as if he had just undergone strenuous exercise, and there were other sounds in the mobile phone besides the sound of talking, such as the sound of glass and porcelain breaking.

"Brother Qingcen, what are you doing? How do I hear what looks like glass is breaking? ”

Gu Qingcen on the other end of the phone paused slightly, and then explained, "I was cleaning up the kitchen, and I accidentally broke a plate and was cleaning up." Rest assured, I'll be on time tomorrow. ”

Gu Qingcen was not like usual, he would always chat a little more every time he called Gu Yanan before, but this time he seemed to want to hang up the phone earlier.

Gu Yanan was very worried about the disappearance of Ebola specimens in the P3 laboratory, and hurriedly asked without waiting for Gu Qingcen to hang up the phone, "Brother Qingcen, I still have work to check with you, there was an explosion when the exterior wall of the P3 laboratory in our center was renovated before, and the power was cut off in the P3 laboratory, have you ever entered the inside of the laboratory, have you touched the specimens inside?" ”

There was a slight silence, as if thinking, and as if recalling, "Well, I moved a batch of specimens at that time, but I changed the position, and I was thinking about entering them into the computer data system, but I was busy dealing with the epidemic and forgot about it, and I can go to the P3 laboratory with you tomorrow to find out." ”

Gu Yanan was originally very nervous in his heart, but after hearing Gu Qingcen's answer, his heart settled down inexplicably, "Okay, then we'll see you tomorrow, oh no, see you in the evening." ”

——

After the end of the day, 7:10 p.m.

In front of Gu Qingcen's bachelor apartment.

Gu Yanan carried the chicken soup cooked in advance and knocked on the door.

After three door rings, the door was opened from the inside, and Gu Qingcen appeared in front of Gu Yanan.