According to Wang Juan's description of the bat cave, the four of them continued to walk deeper into the cave, and after walking for a distance, the light became significantly darker, and the air became humid and smelled of feces.

Dark shadows flashed in the depths of the cave, and it was the sound of the four people walking and the light of the flashlights that alarmed the bats that inhabited the cave walls.

The flashlights of the four men shone at the cave wall in unison.

The black pressure is pressed against a bat, and the bat's eyes reflect a bright red light in the light of the flashlight.

Wang Xiaoxiao couldn't help but exclaim: "So many bats! I felt like I had fallen into hell. ”

Lu Li stood beside Wang Xiaoxiao, "Why does it feel like falling into hell?" You wear protective clothing, and bats don't bite you, so you can't get the rabies virus. ”

"They say that bats are hellbringers, they live here, isn't it like hell here?"

"Huh? Are bats hellbringers? How I haven't heard of it. ”

"There are many more viruses in bats, some of which can infect humans, and in addition to the most common rabies virus, there are many other deadly viruses, such as Ebola, Nipah, Marburg, SARS...... All of these can lead to zoonotic pandemics in humans. ”

"Hearing you say that, bats can also bear the title of 'Hellbringer'."

Wang Xiaoxiao and Lu Li were discussing the virus carried by bats and its designation, and Gu Yanan had already put the air sampler on the ground, put in the battery, and let the air sampler start working.

According to the previously assigned sampling task, Gao Fei and Lu Li captured bats, Wang Xiaoxiao took the sampling box to sample the bat feces on the ground, and Gu Yanan not only used an air sampler to filter and concentrate the air in the bat cave, but also sampled the suspicious water, stone walls, and soil in the cave.

Soon, Gao Fei and Lu Li caught more than a dozen bats and put them in the sampling box.

Wang Xiaoxiao collected bat droppings from different locations and depths on the cave floor.

Finally, after the air sampler worked for a while, Gu Yanan took out the filter membrane in the air sampler and sealed it back into the sampling box.

Out of the bat cave, the four people took off their biosafety suits, and the entire sampling process in the bat cave ended.

It was almost noon.

Gu Yanan asked Gao Fei, "Let's go back the same way now, can we get out of the mountain before dark?" ”

Gao Fei estimated the time and nodded, "Well, according to the speed we walked in the morning, we can get out of the mountain before dark." ”

Before leaving the bat cave, Gu Yanan used a piece of wooden chestnut outside the bat cave and wrote it with a black marker: Biological danger, do not approach.

A biosafety sign was also drawn in the most prominent part of the board.

After setting up the planks, the four of them returned the same way with the specimens they had collected from the bat cave.

On the way back, because they already had the experience of walking mountain roads, the speed became faster than when they entered the mountain, and before the sun set, the four of them finally arrived at the place where they parked outside the Yuntai Mountain Range.

Lianhai Center for Disease Control and Prevention, Laboratory.

Specimens collected from the Monkey Ridge Bat Cave are sent to the laboratory.

The results of the rabies nucleic acid test came out quickly.

Rabies virus has been detected in bats, in the air in bat caves, and in bat droppings.

Of the 12 bats brought back, eight tested positive for rabies nucleic acid.

Looking at the test results, Gu Yanan frowned slightly.

Judging from the current test results, Chen Feng may be infected with rabies virus in two ways.

First, Chen Feng's palm was injured and bleeding in the bat cave, and the wound came into contact with the bat's feces, and the bat feces contained rabies virus, which entered the peripheral nerve endings from the wound of Chen Feng's palm, multiplied in the terminals, and entered the central nervous system along the nerve myelin sheath, resulting in the onset of the disease.

In the second case, Chen Feng stayed in the bat cave for one night and breathed the air containing rabies virus in the bat cave, which entered Chen Feng's body through the mucous membrane of the respiratory system, first multiplied in the nerve endings under the respiratory mucosa, and finally entered the central nervous system along the myelin sheath of the nerve, resulting in the onset of the disease.

Chen Feng's rabies virus infection may be one of the above two routes, or it may exist in both.

Gu Yanan told Gu Jiashu about the results of the experiment, and at the same time searched for the latest rabies cases in the epidemic system of the disease control network, looking at their epidemiological history to see if any of these patients had ever been to the Wild Monkey Ridge Bat Cave.

The results of the query in the epidemic system came out quickly.

One of the patients, who died of rabies three months ago, had traveled to the Yuntai Mountains.

The epidemiological investigation of the patient, a resident of a county under the jurisdiction of Lianhai City, was completed by the local county CDC after his death, and the online records were relatively sketchy, only recording that the patient had been to the Yuntai Mountains two months before the onset of the disease, but which scenic spots in the Yuntai Mountains had been to were not recorded in detail.

Gu Yanan decided to conduct a secondary epidemiological history investigation of this patient.

Because the patient was in the county, Gu Yanan decided to ask a colleague from the county and district disease control who had investigated the patient's epidemiological history.

Gu Yanan was busy investigating the rabies virus infection in the Wild Monkey Ridge Bat Cave, and there was also a situation on Nan Hanfei's side.

Lianhai City Police Station, Information Room.

Police officer Xiao Li is questioning several poachers who have been caught in Yuntai Mountain in the interrogation room.

Of the three poachers, one was a man in his forties, and the other two were young men in their twenties.

The middle-aged man in his forties reacted violently to the questioning of the policeman Xiao Li.

Police officer Xiao Li sat across the table and asked, "Name?" ”

"Zhang Youwei."

"Age?"

“42！”

"When did poaching in Yuntai Mountain begin?"

Zhang Youwei did not answer, but moved his arms, legs and feet, trying to stand up.

"Don't move! Answer the question well, when did you start poaching in Yuntai Mountain? ”

Suddenly, Zhang Youwei spat at Xiao Li, a policeman sitting opposite, and scolded: "Lao Tzu just caught a few monkeys and a few birds in the mountains, why did you catch Lao Tzu?" ”

Zhang Youwei was emotional, if it weren't for the handcuffs and feet being restrained on the chair, he would have stood up and wanted to bite someone.

The policeman Xiao Li wiped the saliva from his forehead, he was in a very bad mood, slapped the table, and yelled at Zhang Youwei: "Be honest, you dare to be so arrogant after committing a crime, be careful to add another charge to you for attacking the police!" ”

Zhang Youwei was not only not intimidated by the words of the policeman Xiao Li, but his emotions were even more excited, sweating profusely, baring his teeth, and drooling from the corners of his mouth, wanting to bite.

The young policewoman who was in charge of recording in a corner of the inquiry room was very worried, and whispered to the policeman Xiao Li, "This person looks like crazy, don't get too close to him, be careful of being bitten by him." ”

At this moment, Nan Hanfei walked into the inquiry room, saw the scene at this time, frowned slightly, and asked the policeman Xiao Li, "How did you stimulate him?" ”