Municipal Police Department.

Gu Yanan took the disease control emergency team to take samples from the police officers who had been to the farm pig farm in Qixia County, and collected samples from the deceased Qian Fulai.

Nan Hanfei is also among them.

Gu Yanan found that in addition to the forensic doctors with more severe symptoms, several other police officers who fell ill had mild symptoms, which were typical of the early symptoms of the flu, with fever, cough, sore throat, headache, and strong fatigue.

Gu Yanan advised all symptomatic police officers to go to the hospital for treatment, and others who have been to the farm but have not yet become ill should self-isolate at home and avoid close contact with family members and strangers.

The asymptomatic police officers were not happy, after all, no one wanted to be restricted in their personal freedom.

Nan Hanfei did the work for his colleagues, and only said one thing: the owner of the pig farm had died, the pig farm worker was seriously ill and hospitalized, and the forensic doctor and several police officers who had close contact with the owner of the pig farm all showed symptoms, and according to the progress of the previous course of the disease, the consequences were very serious.

Temporary restriction of freedom is nothing compared to life.

In the end, the officers all agreed to Gu Yanan's arrangement, and before the results of the examination came out, Nan Hanfei took the lead in self-isolating in his bachelor apartment.

——

Lianhai Center for Disease Control and Prevention, Emergency Office.

Section Chief Li of the laboratory gave feedback on the test results in a timely manner, "Director Gu, the nasopharyngeal swab influenza nucleic acid test results of severe pneumonia patients sent by the hospital and exposed personnel from the police station have come out, and the positive type A is not classified. ”

Sure enough, it was influenza, but it was not classified, and the specific subtype has not yet been determined.

Gu Yanan asked, "What subtypes have been done?" ”

"Several common A subtypes have been done, and all of them are negative."

"Common subtypes? Which ones? ”

"Seasonal H1, seasonal H3, new A(H1N1) in 2009, and avian influenza that is prone to occur in the human population are all negative for H7 and H9."

Influenza A is generally positive, it must be a subtype of A, the common subtype is negative, and the rest are all subtypes that have an ethnic barrier with humans, and can rarely cause an epidemic of influenza in humans.

The two patients with severe pneumonia were workers on the farm, and the police officers had been to the farm.

Pig?!

Could it be that the flu in the pig herd spreads across races to the population?

If it is true that the subspecies of influenza is spreading across races, it is serious.

Historically, the cross-racial transmission of influenza viruses has caused many pandemics worldwide.

Gu Yanan: "Section Chief Li, please test for several subtypes of swine flu." ”

"Swine flu?" Section Chief Li thought about it for a while, and immediately reacted that the swine flu that Gu Yanan said was not the "swine flu" that was redistributed in 2009, but the swine flu that was prevalent in the pig herd.

Section Chief Li was surprised, "Director Gu, do you suspect that a certain subtype of swine flu has spread across races?" ”

"Yes, this flu outbreak is related to pig farms, and there have been many instances of swine flu invading the human body in history."

Section Chief Li was embarrassed, "But our laboratory currently does not have a reserve of detection kits for the swine flu subtype. ”

Gu Yanan remembered that when he first entered the disease control work, he had done a scientific research project on swine flu, which contained primers and probes for detecting the nucleic acid of the swine flu virus.

"There are no commercial kits, but I have primers and probes, and I can identify isotypes by mixing my own system."

Section Chief Li was overjoyed, "Well, with primers, I can do anything, I will first use the original specimen for classification, and then let Xiao Zhang do virus isolation at the same time, and then do sequencing, I must completely figure out the pathogen of this epidemic." ”

Two hours later.

Section Chief Li of the laboratory called Xingchong, "Director Gu, the results are out, and the classification result is the classic swine flu virus CS H1N1 subtype, which is indeed the cross-racial transmission of the swine flu virus, which is a big discovery." ”

It is a big discovery, this subtype of the virus is usually only circulating in pig herds, and there are very few examples of cross-racial entry into people, and there is conclusive evidence in history that reported a flu epidemic in New Jersey in 1970, when more than 500 people were infected, although there was only one death, but the epidemic caused great panic.

The next handling of the epidemic is very important, and it is necessary to curb the spread of the epidemic in a timely manner.

Where did the swine flu virus first emerge in the human world? How did you break through the racial barrier? Can it already be transmitted from person to person? What is the current number of infections? Where is the scope of infection?

These are all issues that the CDC emergency response team is trying to solve.

Since the people in this epidemic are related to the farm pig farm under Yuntai Mountain in Qixia County, this is also the first place that needs to be investigated.

Gu Yanan assigned tasks to everyone in the emergency team in the emergency office, "Zhou Lao and Gao Fei went to Qixia County People's Hospital to investigate patients related to the farm pig farm, in addition, to investigate the cases with flu-like symptoms in the hospital, and ask them if they have recently been to the farm pig farm, or have been in contact with people related to the farm pig farm.

Wang Xiaoxiao stayed in the office and inquired about the information of influenza-like cases from the epidemic network, focusing on influenza clusters to see if they were related to the epidemic.

Lu Li and Xiao Chu went with me to the farm pig farm at the foot of Yuntai Mountain, and brought protective equipment. ”

——

Qixia County, Lianhai City, a farm pig farm under Yuntai Mountain.

The disease control team led by Gu Yanan parked the car outside the gate of the pig farm.

The people from the Qixia County Disease Control and Prevention Department have been notified to rush to the pig farm in advance to meet with the municipal disease control emergency team.

The early autumn noon sun is still a little hot, and the smell of fermented pig manure wafts from the pig farm, which is unpleasant and choking.

Lu Li covered his nose as soon as he got out of the car and complained: "Along the way, the air in the mountain village was originally very fresh, and I was almost stunned when I arrived at the pig farm. ”

Section Chief Qian, the person in charge of the county disease control and control, greeted him, "The smell is very big, and I feel that the pig manure here must not have been cleaned up for a long time." ”

Knocking on the door of the pig farm, a middle-aged man in his forties appeared in front of him.

Section Chief Qian showed his work card, "We are from the Center for Disease Control and Prevention, and we are here to investigate an epidemic of swine flu infection among people, please cooperate." ”

"CDC? Does the flu kill people? The middle-aged man asked inexplicably, he was a relative of the boss's wife, and he came to help in the past few days, and he inquired and knew that the boss was sick and dead, and now there are people from disease control to investigate, which makes him very worried.

The middle-aged man opened the door to the person in disease control, pointed to a house next to the gate, and said, "The proprietress is inside, because the boss just died, she is in a bad mood and is resting inside." ”

Section Chief Qian asked the middle-aged man, "Are you a worker here?" ”

"No, I just came here to help temporarily, I'm the brother-in-law of the boss's cousin, I'm a relative, I live in the village under the mountain, it's not to see that something so big happened to her family, I just came to help, feed the pigs and clean up the pig manure."

The middle-aged man knocked on the door and shouted, "Sister, the people from disease control are here, and they want to ask you something." ”