Gu Qingcen remembered the Lianhai City Disease Control Work Plan he had seen before, and most of the annual rodent density monitoring work was concentrated in autumn, and now it is only the early summer season.

"Do you want to change your work plan and monitor rodent density in advance?"

"Well, usually there is an outbreak of hemorrhagic fever with renal syndrome in the autumn, and this year there was the first outbreak of hemorrhagic fever with domestic mouse renal syndrome in our city, and I decided to carry out the monitoring of rat density in all counties and districts of the city in advance."

After making a decision, Gu Yanan began to arrange tasks for the CDC in each county and district, so that they could complete the monitoring of rat density in their jurisdiction within a week, that is, catch mice in various places, and then hand over the caught mice to the laboratory of the Municipal CDC for pathogen testing.

After the task was assigned, Gu Yanan waited for the counties and districts to send the caught rats over when the time came.

The municipal disease control emergency team led by Gu Yanan was not idle, and went to various counties and districts every day to supervise disease control and provide on-site guidance to catch mice.

On the fourth day of the assignment, Gu Yanan received an urgent report.

A number of staff members of Dongcheng District Disease Control and Prevention developed symptoms of hemorrhagic fever with renal syndrome at the same time, including fever, headache, orbital pain, and three pains and three reds.

The person who became ill was promptly sent to the Department of Infectious Diseases of the First People's Hospital of Lianhai City for testing, and it was indeed infected with hantavirus.

After the epidemic in Dongping community, no similar cases have been found, and the epidemic has been controlled.

This time, the staff of Dongcheng District Disease Control and Prevention fell ill at the same time after a lapse of many days, which made Gu Yanan feel very strange.

Gu Yanan, who got the news, rushed to the infection department of the People's Hospital as soon as possible.

Inside the infectious disease ward.

Several infected people in Dongcheng District Disease Control appeared as if they were drunk because their faces were flushed.

Lao Zhang, who was in charge of catching mice, was the person in charge of the Dongcheng District Disease Control and Emergency Transmission Department, and after seeing Gu Yanan coming, Lao Zhang hurriedly explained, "Director Gu, when we caught mice, we really wore protective clothing, and I don't know how so many people were infected at the same time." ”

"The people who were infected this time are all staff members who participated in the rat catch?"

"No, there are a total of 6 people who went to the CDC to catch mice, and 4 of them are infected, and many others are also infected, including the security guard of the CDC Experimental Building in our district, and the cleaner in charge of cleaning the laboratory is also infected."

Gu Yanan took a detailed list of infected people from the hospital, and got the specific work content and residential address of the infected person from Section Chief Zhang, and then took the municipal disease control team to Dongcheng District CDC to do on-site investigation.

——

Lianhai City, Dongcheng District Center for Disease Control and Prevention.

Located on the coast of Dongcheng District, Dongcheng District CDC has two buildings, an administrative building and an experimental building.

Gu Yanan, Gu Qingcen, Lu Li and Wang Xiaoxiao drove the on-site flow shunting of the Municipal Center for Disease Control and Prevention and entered the compound of the Dongcheng District Center for Disease Control and Prevention.

Because multiple staff members were infected at the same time, and the route of infection is unknown, the Dongcheng District Disease Control Compound has self-isolated with a quarantine belt.

The administrative building is close to the main gate, and the laboratory building is located behind the administrative building.

After the group entered the compound, Gu Yanan directly ordered the others, "Go to the first floor of the laboratory building to check first." ”

"Why? Section Chief Zhang of the Emergency Communication Section, isn't their office on the other side of the administrative building? ”

"Only 4 out of 6 people in the emergency transmission department are infected, although they are all working in the administrative building, but they will come to the experimental building during the hunting of wild mice, and the security guard on the first floor of the experimental building is also infected, and the cleaner who is responsible for cleaning the experimental area is also infected, so the most likely thing is that there is a problem on this side of the experimental building, check this side first, and then go to check the administrative building if there is no problem."

Before entering the laboratory building, everyone put on protective equipment and was led by an uninfected staff member from the Dongcheng District Disease Control and Emergency Transmission Department.

Pushing open the door of the laboratory building, a foul smell came to my face.

Gu Yanan wondered in his heart, the smell of this laboratory building was completely different from when he came a few days ago.

When I came to supervise a few days ago, although there was a smell of disinfectant water in the laboratory building, the air was still fresh, but now there was a smell of feces, I don't know what they did in the laboratory building?

The city's CDC emergency response team acted separately, with each person in charge of a house and inspecting it step by step.

Along the corridor, check one by one from the outside to the inside, and when the last room at the end of the corridor was found, Gu Yanan pushed open the door, and a foul smell came to his face.

The smell of feces, mixed with the smell of urine, and the smell of fermentation at high temperatures, is still disgusting even through a protective mask.

The room is not large, and there are many cages in it, and there are all kinds of rats in the cages.

Because the feces were not cleaned up in time, the rat droppings, rat urine and bedding were mixed together and fermented, resulting in a very unpleasant smell.

Gu Yanan stood at the door of the room, turned his head and beckoned to the staff in charge of Dongcheng District Disease Control and Prevention, signaling him to come over.

"What is this room for?"

"Temporary animal room, this time to carry out a rat density survey, with a rat trap to catch a lot of live mice, our section chief Zhang plans to send most of the mice to your city disease control, but also to leave a small part of our own experiments, because we have just applied for a municipal scientific research project here, the rats are temporarily placed here, and they will be treated uniformly in a few days."

"I remember that your district CDC did not apply for the qualification to use the laboratory animal room, nor did it make relevant records, raising animals that may carry pathogens, at least there must be a negative pressure animal room, you have nothing here, you dare to raise wild rats casually?"

The man hesitated, and a sentence came out for a long time, "This is what our Section Chief Zhang meant." ”

It was rare to hear Gu Yanan reprimanding people sharply, and the rest of the emergency team gathered over, and everyone gasped when they saw the scene in the room.

Hantavirus can be spread through the air, especially through the excrement of rats.

The scene in the room in front of me was filled with rat droppings and urine, and the smell had spread throughout the experimental building.

It's no wonder that even the uncle who is in charge of security in the guard room on the first floor can be infected when he drinks tea every day, and as long as he smells this smell, he may be infected.

Dongcheng District Disease Control This large-scale staff infection epidemic, the infection route seems to be clear, and now the evidence is poor.

Gu Yanan asked Lu Li and Wang Xiaoxiao to use an air sampler to sample the air in the entire experimental building.

Gu Qingcen and Gu Yanan killed and sampled all the wild mice in the room and brought them back to the laboratory of the Municipal Center for Disease Control and Prevention for detailed examination.

After the samples are collected, the entire laboratory building is thoroughly disinfected.

——

Lianhai Center for Disease Control and Prevention, Emergency Office.

The results of the wild mouse book and air sampling samples brought back from the Dongcheng District Center for Disease Control and Prevention were quickly released, and hantavirus was detected in them.

The transmission chain of large-scale infection of disease control personnel in Dongcheng District has been confirmed.

Dongcheng District CDC conducted a rat density survey, captured a large number of live rats from the wild, and kept them in a room at the end of the corridor on the first floor of the experimental building.

The room was an ordinary room, with no protective equipment, not suitable for keeping experimental animals, and the wild mice were placed inside, and the excrement contained a large amount of hantavirus.

Hantavirus spreads through the air with excrement and infects disease control workers working on the first floor.

After this incident, Gu Yanan wrote a summary report and ordered the relevant personnel of Dongcheng District Disease Control and Prevention to summarize the accident.

This incident was regarded as a typical biosecurity accident, and publicity and education were carried out in various centers for disease control and prevention in Lianhai City.