As soon as he told the police about this clue, the police immediately began to investigate, and the results came out quickly.

A clerk at an antique shop in the city reported to the police that on the evening of November 7, four people came to the store with a large number of antiques and asked the owner to appraise them.

Gu Yanan followed the police to the antique store.

The coincidence that surprised Gu Yanan was that the owner of this antique shop was the pneumonic plague patient who died in the First People's Hospital of Lianhai City.

The antique store staff who reported the situation were also in the pneumonic plague isolation observation period, and it was the staff of the high-tech zone disease control who carried out the isolation task.

The antique shop staff currently has no clinical symptoms of pneumonic plague, but they have been in close contact with the antique shop owner, so they will be quarantined for two weeks.

After inquiry, the antique store staff explained in detail what happened that day.

On the evening of November 7, when the antique store was about to close, four men each carried a large package and mysteriously entered the store.

The clerk felt strange and was extremely vigilant, only to see four people put the package on the counter, and opened the package to reveal all kinds of clay pots.

The owner of the antique shop had sharp eyes and knew that these clay pots and jars were priceless antiques, so he invited the four of them to the back room of the antique shop and closed the door to talk in detail.

The clerk was curious, and listened to it at the door for a while, only to hear the boss talk to the four people about Han Dynasty antiquities, ancient tombs, prices, big buyers, etc., and he couldn't really hear it.

The boss chatted with the four people for a while, and then sent the four people away very enthusiastically.

Gu Yanan thought to himself, it's good that you didn't go into the back room with the boss, otherwise you would have been in direct contact with the four surveyors who had entered the ancient tomb, and now you would not be in a state of isolation and observation, but directly admitted to the hospital.

At this time, Gu Yanan had basically determined in his heart that Lao Zhang and the other four surveyors were infected with plague in the ancient tomb, and then infected the plague bacillus to the owner of the antique store after coming to the antique store, which can also be corroborated from the time of onset.

Gu Yanan asked, "Do you know where the four people who came to appraise have gone?" ”

"I don't know, when they left, they seemed to tell the boss to call later."

The phones of the four people have long been unreachable, and they all show a shutdown status.

The clues on the antique store's side feel broken again.

Just when Gu Yanan was worried, Gao Fei called.

"Sister Yanan, the Municipal People's Hospital has received two more patients suspected of pneumonic plague, Zhou Lao and I are sending the patient's specimens to our disease control laboratory, waiting for the results to be confirmed, Dr. Gu said that it can basically be determined from the clinical symptoms that it is pneumonic plague, because the matter is urgent, so let me tell you first, Zhou Lao has brought someone to investigate the close contacts of the patient."

"Did the patient come into contact with an antique shop owner? Or have you had contact with the villagers at the foot of Qingcheng Mountain? Gu Yanan hurriedly asked.

"The two patients received today have mild symptoms and clear consciousness, and Zhou Lao and I have asked separately, the two live in the same community in the high-tech zone - Yuhu Community, one is the owner of a fruit shop in the community, and the other is the owner of a small restaurant in the community, and they have not gone out recently, and they have no contact with the owner of the antique shop and the villagers under the Qingcheng Mountain."

Gao Fei paused slightly, and asked a little nervously, "Sister Yanan, this time the epidemic has spread, and pneumonic plague patients have appeared in several locations one after another, what do you say is the source of infection of pneumonic plague this time?" ”

Gu Yanan immediately thought of the four missing survey team members, if the previous speculation that there was a source of infection in the ancient tomb was correct, then the new pneumonic plague case in the high-tech zone was likely to be infected by the four missing survey team members.

In other words, the place where the pneumonic plague appeared in the high-tech zone is the place where the four missing surveyors once appeared.

Gu Yanan didn't answer Lu Li, but began to assign tasks, "Gao Fei, you immediately take people to the community where the two newly discovered pneumonic plague patients in the high-tech zone are located, I will send you photos of the four of them in a while, and you go to the neighborhood to find these four people." ”

"Why? What's so special about these four people? Lu Li felt strange why Gu Yanan was interested in these four people.

"They may be the real first cases of this pneumonic plague outbreak, and they need to be found as soon as possible."

Half an hour later, Gao Fei came with the news that four missing survey team members had been found in a short-term rental house in the Yuhu community.

The police and the CDC found the rental house almost at the same time.

When Gu Yanan arrived at the scene, a cordon had already been set up outside the rental house.

Walking into the rental house, everyone was stunned by what they saw.

In the cramped rental house, there were two simple small beds, two corpses in each bed, a total of four corpses, which were the four missing survey team members.

Gu Yanan, wearing a protective suit, carefully walked over the blood-colored vomit on the ground and stood next to the corpse.

Zhou Lao and Gao Fei had already entered the rental house one step ahead of time and examined the corpse.

Because of the cold weather in winter, the corpses that had been dead for many days did not decompose, but were frozen and stiffened, as if they had just died and were frozen in the freezer.

The four of them were dead, with black faces, and bloodshot at the corners of their mouths and noses.

"Typical symptoms of the Black Death, it appears that there were four more pneumonic plague deaths." Goofy examines the dead while making his own guesses.

Zhou Lao reported the results of the previous investigation to Gu Yanan, "I showed the photos of these four people to the two pneumonic plague patients who had just been admitted to the hospital, and both patients reported that they had seen Lao Zhang.

Among them, the owner of the fruit shop said that Lao Zhang went to his store to buy three catties of oranges on the morning of November 8, that is, the morning of Lidong, because Lao Zhang's face was black and he kept coughing, so the owner of the fruit shop was very impressed with him.

The owner of the restaurant said that he had also seen Lao Zhang go to the store to buy breakfast in the morning of Lidong, and the soy milk fritters he bought, as well as two steamed buns, which was about the amount of breakfast for four people. ”

It seems that the transmission chain of the plague epidemic in the Yuhu community has been clear, and after the four surveyors returned from the Qingchengshan tomb on November 7, they first went to the city to find the owner of the antique shop and passed the plague bacillus to the owner of the antique shop.

That night, the four of them stayed in a temporary rental house in Yuhu Community, and the next morning, November 8, Lao Zhang went out to buy fruit and breakfast, and infected the plague bacillus to the owner of the fruit shop and breakfast shop.

Gu Yanan analyzed it clearly in his mind, and Zhou Lao continued to report.

"People who have been in contact with antique shop owners, as well as fruit shop owners and breakfast shop owners, have begun to trace and quarantine."

Gu Yanan was very relieved about Zhou Lao's emergency handling ability, and now she was more concerned about the experience of the four survey team members in the ancient tomb.

Gu Yanan leaned over to carefully examine the bodies of the four survey team members.

Neck, chest, back, thighs, calves...... All four deceased had red spots from insect bites.

This situation is the same as Wang Dequan's corpse.

Gu Yanan found that there were yellow-brown insects in the clothes of the corpse, and was about to use tweezers to clip them out, when a familiar voice suddenly sounded behind him.

"A litter dead?!"

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