Gu Yanan took the record book in the hand of the owner of the flower house, and looked at one of the records of Chen Dali's work time and remuneration, as well as Chen Dali's contact information, and the phone number on it was Chen Dali's father.

The owner of the flower house saw what Gu Yanan was recording and asked curiously: "What happened to this Chen Dali?" Why did you CDC people come to investigate? Is he sick? ”

Lu Li explained: "Chen Dali is sick, he has a sleeping sickness that can only be found in tropical Africa, and we are here to investigate the source of the disease and its transmission chain. ”

The owner of the flower house looked at the tropical flowers and tropical birds in his flower room vigilantly, and asked, "Do you suspect that Chen Dali's illness was infected by the tropical flowers and birds in my flower room?" ”

"Not sure, we're looking for evidence."

The owner of the flower house suddenly felt uncomfortable in his heart, and couldn't help but ask Gu Yanan, "Comrade doctor, what are the symptoms of the sleeping sickness that Chen Dali has?" ”

"To put it simply, after being bitten by a tsetse fly, there will be local skin swelling within three weeks, and after three weeks, there will be symptoms of blood and lymphatic system, such as swollen lymph nodes, fever and cardiovascular diseases, and in the later stage of the course of the disease, there will be tremors, spasms, drowsiness, and lethargy, so it is called sleeping sickness."

The owner of the flower house began to compare himself with these symptoms one by one.

local skin swelling, warmth, lethargy...... It seems that these symptoms have been there, and the owner of the flower house began to get nervous, "Comrade doctor, do I also have sleeping sickness?" ”

"You've been to Africa?" Gu Yanan asked.

"I've never been to Africa, but six years ago I went to Myanmar and bought a batch of jade there, and when I came back, not only did I not make any money, but I also lost a lot of money, and I haven't been abroad since."

Lu Li felt that it was unlikely that the owner of the flower house would be infected with Trypanosomiasis, after all, this disease only existed in Africa, and all cases in China were imported, and the owner of the flower house had not been to Africa, so he did not have the conditions to be infected with this disease.

But thinking of Chen Dali lying in the ward, Lu Li was unsure, Chen Dali had never been to Africa, but there was a West African trypanosomes in his body, what was going on?

Gu Yanan asked the owner of the flower house, "Have you ever been bitten by a tsetse fly?" ”

"What is a tsetse fly? Flies? There are a lot of flies in my flower room. ”

"Tsetse flies, also known as tsetse flies, live in tropical Africa and feed on the blood of humans and animals," Gu explains. ”

"That's a blood-sucking fly?"

"Uh...... Think so too. ”

"I haven't seen blood-sucking flies, but there are still biting flies, comrade doctor, I see the sampling box you brought, why don't you help me take some samples and go back to check and check, maybe I also have that sleeping sickness, you should investigate all the situation clearly."

The owner of the flower house rolled up his sleeves very cooperatively, stretched out his arm, and asked Gu Yanan to collect blood for him.

Gu Yanan glanced at Lu Li, "Take samples, don't let go of all the clues." ”

Lu Li took out the blood drawing equipment from the sampling box and collected blood from the owner of the flower house, put it back in the sampling box, and said: "The test results will be fed back to you within three working days, you just wait for the news." ”

The owner of the flower room pressed the position on his arm where the blood was drawn by the needle with a cotton ball, and asked Lu Li, "Comrade doctor, you see that my symptoms don't look like sleeping sickness, I had an inexplicable fever before, and in the past six months, I have lost a lot of weight, don't look at me so fat now, in fact, I used to be fatter, I have lost 20 pounds in the past six months, the key is that I didn't deliberately lose weight." ”

Lu Li sorted out the sampling box, "This sleeping sickness is sometimes difficult to judge from the symptoms alone, so if you have to wait for our examination results, you can wait for three days with peace of mind." ”

Gu Yanan brought the topic back to Chen Dali and asked the owner of the flower house, "Where was Chen Dali's carpentry at that time?" ”

"On the square behind this flower and bird market, which used to be stacked with sundries, has now been transformed into a flower bed square used for fitness."

"Can you show us there?"

"Yes."

The owner of the flower house asked the people from the shop next door to temporarily help him take care of the storefront, and he took Gu Yanan and Lu to the square behind the flower and bird market.

This flower bed square is the same as most of the community flower bed squares in Lianhai City, which are common green trees and flowers in Lianhai City, and the flower beds are not large, in addition to the green belt, there are also winding stone brick paths.

The owner of the flower house said, "This is just half a year ago just renovated into this, before this is a vacant land, piled up a lot of sundries, when Chen Dali came to do carpentry work, those timbers are stacked here, and later Lianhai City in order to improve the urban environment, changed here into a green belt, turned into a small flower bed, and put some fitness facilities, nearby residents sometimes come here in the morning and evening to exercise." ”

Lu Li and Gu Yanan walked around the flower bed square along the stone brick path, with nearby residents exercising on the fitness equipment in the newly built square, elderly people playing with children in the square, and aunts walking their dogs getting together to chat.

A group of scenes from the daily life of residents, no clues related to the spread of sleeping sickness have been found.

Back in the flower room of the flower and bird market, Gu Yanan asked the boss about Chen Dali.

The owner of the flower house said everything he knew, and finally sighed, "Dali is a good boy, very enthusiastic, help me finish the flower shelf, and help deliver it for free, I didn't expect to get this disease, you must help him well." ”

Gu Yanan decided to investigate all the people who came into contact with Chen Dali during the time period when he was likely to be infected with sleeping sickness.

When he left the flower and bird market, the owner of the flower house was very enthusiastic to sell his own flowers and birds to Lu Li and Gu Yanan.

"Would you like to bring a pot of succulents or some other greenery? It's nice to put on my desk, and a lot of the flowers I have here are imported from Africa. ”

The owner of the flower house deliberately took out a small pot of anthurium, displayed it in front of Lu Li and Gu Yanan, and said with a tone of showing off and sales: "This pot of anthurium is a tropical flower, which is very popular with the office crowd. ”

Lu Li stopped and deliberately asked, "Since it is an imported flower and bird, there should be an import certificate, can you show us?" ”

The owner of the flower house looked stunned, smiled very awkwardly, and said: "There is no import certificate, but many of my flowers are indeed African tropical flowers, and the soil I use is indeed from Africa, so my flowers grow better than other flowers in the flower and bird market, so the business is also the best." ”

Lu Li didn't care, caught up with Gu Yanan, who was walking in front, and returned to the CDC together.