At the door of the ward there was a yellow bag with a biosecurity logo on it, and several pieces of clothing were placed inside, and the belt was tightly tied.

"This is the clothes that two patients have changed into, and I am worried that there are fleas in it, so I put it in a separate biosafety garbage bag and am ready to hand it over to you CDC. "Dr. Yu has also been involved in dealing with outbreaks of different scales before, so he has a certain understanding of disease control work.

For different epidemics, the methods of flow investigation are different.

Disease control should be investigated, on-site sampling, this time it is suspected of endemic typhus epidemic, and the vector must be investigated.

Rats and rat fleas are vectors, and people may have rat fleas on them, so doctors prepare in advance.

Yu Fei was the first to ask, "Do you still need the patient's clothes?"

Doctor Yu paused slightly, "Uh...... Didn't say no. ”

Li Bai instructed Yu Fei, "Seal it in a large sampling bag, bring it back to the laboratory, find the medium, be careful, and return the clothes to the patient after they are disinfected." ”

Dr. Yu and his team pushed the door into the isolation ward.

After a brief introduction, Li Bai first looked at the patient's symptoms, and then went straight to the topic of circulation.

Where did you do before and after the onset of the disease, what did you do, what did you come into contact with?

Three questions for the soul.

This is followed by more specific details.

Lin Xiaoxiao's four interns followed and listened and watched.

Yang Yufeng muttered in her heart, the disease control work is not as difficult as imagined, just ask the question, why do you still mobilize so many people to come?

After asking the question, the CDC team came out of the isolation ward.

Li Bai: "From the patient's symptoms and epidemiological history, it can be preliminarily judged to be endemic typhus.

Yu Fei and Gao Meng, the two of you sent the patient's specimen to the Municipal Disease Control Laboratory, and carefully explained the details to Section Chief Yang of the Laboratory Department, and the results were released as soon as possible.

The rest of the people went with me to the urban village to do on-site surveys. ”

Yang Yufeng muttered in a low voice, "Oh my God, you want to go to the patient's house?"

Lin Xiaoxiao also responded to her in a low voice, "Of course you have to go, the patient's home is a key place for circulation, and catching mice is a must." ”

Yang Yufeng's heart was furious, oh my God, she doesn't want to catch mice, she has been most afraid of mice since she was a child.

Here, Yang Yufeng and Lin Xiaoxiao were discussing in a whisper what they might have to do when they went to someone else's house, and Li Bai had a new command over there.

"Comrades in Lianyun District have paid attention, after arriving in the urban village, everyone has divided labor and cooperated, you are responsible for the investigation of typhus-like cases among the neighbors around the patient, and the people from the municipal disease control and emergency response team went to the patient's home with me to check the external environment. ”

Just as they were about to leave, two ambulances roared in front of the district hospital.

Doctor Yu just now ran over and grabbed Li Bai, "Director Li, it's not good, a few more patients with typhus symptoms have been sent over." ”

Li Bai frowned slightly, it seems that the onset of the disease is not an isolated case, and the epidemic has a tendency to expand.

"Don't worry, first admit all the patients with typhus symptoms, and I will have people go over to collect samples. ”

Dr. Yu: "Okay, I'll give the patient a treatment plan for typhus first." ”

Lin Xiaoxiao thought that Li Bai would personally stay to check on the situation of the new patients, but he didn't expect him to make another arrangement, let some people from Lianyun District Disease Control and Yang Le from the Municipal Disease Control stay, and he led the others to continue to the urban village.

On the way to the urban village, the on-site flow shunting car drove fast.

Yang Yufeng sat next to Lin Xiaoxiao and asked a few words from time to time.

"Xiaoxiao, I heard that the environment of the urban village is dirty and messy, have you ever been there?"

"Nope. ”

"Xiaoxiao, I know that you have been in contact with disease control people before, so do you know what work you have to do to investigate the external environment of the patient's home?"

"I don't know the specifics, but I'm definitely going to catch rats this time. ”

Yang Yufeng suddenly quieted down, and every time she got an answer from Lin Xiaoxiao, it made her heart furious.

——

Urban village, Chen Kee grocery store.

Two on-site shunting vehicles were parked on the main road of the urban village.

Before getting off the bus, the disease control personnel all changed their clothes uniformly, wearing long-sleeved work clothes to prevent mosquitoes.

This kind of work clothes is not as eye-catching as the coveralls, but the eye-catching disease control signs on the on-site flow shunting and the equipment in the hands of the disease control personnel still attracted many onlookers.

Under the command of Zhang Lin, four interns set up a cordon at the entrance of Chen Kee's grocery store to prevent the crowd of onlookers from crowding in.

Chen Kee grocery store has two floors above and below, the first floor sells department stores, and there is a temporary breakfast stall, because the owner is hospitalized, the breakfast stall has not had time to clean up the things that have begun to emit a peculiar smell.

The bedroom on the second floor, the department store counter, breakfast stall, kitchen, and grass and flower beds in the front and back yards are all the focus of inspection.

The people of Lianyun District Disease Control and Control are all checking in the surrounding neighbors to see if there are people with symptoms of typhoid fever in the squad leader, and only Li Bai, Zhang Lin and 4 interns are left in the Chen Ji grocery store, so the 4 interns of on-site environmental sampling also have to share some.

"You four, follow Zhang Lin to put the sticky mouse board. Li Bai gave the four interns a task.

There were a lot of sticky rat boards in the on-site flow shunting car, and 4 interns, each holding a few followed Zhang Lin, watching him place them in an orderly manner according to a certain rule.

From upstairs to downstairs, from inside to outside......

When Zhang Lin and his party were placing a sticky mouse board near the counter of the department store on the first floor, suddenly, a black shadow came out from under the counter.

"Ah......h

Yang Yufeng screamed, and subconsciously hugged the intern boy next to him, and the whole person hung on it like a koala.

The others were not frightened by the rats, but they were startled by Yang Yufeng's screams and actions.

Li Bai's face was not good, and he asked Yang Yufeng in a cold voice, "Are you afraid of mice?"

"Well, I've been scared since I was a child, and I'm most afraid of mice. ”

Yang Yufeng's voice trembled and snorted, if it was an ordinary boy who saw such a weak girl, he would definitely feel pity, but Li Bai said in a cold voice, "You can go back to the shunting car to rest." ”

Yang Yufeng's first reaction was joy, but he didn't expect this Director Li to look cold, and he was quite pitiful.

But when she was about to go out, she saw Lin Xiaoxiao and two other male interns shaking their heads at her, their eyes full of sympathy.

She immediately reacted, if she really went out this time, then the internship report might not pass.

Yang Yufeng was bold, stiffened, and shook his head, "No, I'm here for an internship, and I can overcome this fear." ”

After a small episode, everyone continued to be busy.

Li Bai stared at the various small ingredients next to the breakfast stall and found that one of the plates of peanuts had traces of being gnawed.

Since there are rats, the rats are here to forage for food.

The rat's favorite food is peanuts with a slight firmness.

This plate of peanuts may have been eaten by rats.

Open the sampling box and put some of the peanuts into the sampling bag.

"Director Li, do you want to collect other snacks?" Lin Xiaoxiao finished placing the sticky mouse board and consciously followed Li Bai's side.

"Suspicious ones have to be collected. ”

Li Bai's words made Lin Xiaoxiao confused, what exactly are the suspicious types here?

Lin Xiaoxiao's confused eyes attracted Li Bai's attention.

Li Bai did not answer, but asked rhetorically, "What is the transmission route of endemic typhus?"

"Spread by rat fleas. ”

"Is this the only way?"

Lin Xiaoxiao thought for a while and suddenly realized, "No, in addition to rat flea bites, there are many other ways, if the food or environment is contaminated with the excrement of rats infected with Rickettsial Moleyi mice, people may also be infected if they eat contaminated food and come into contact with the contaminated environment." ”

Li Bai's eyes were approving, she was really a smart girl, and she could understand everything.