Ye Zhenzhen was shocked, "Squirrel? have you ever bought a squirrel?"

The fat old man was weak-hearted, and snorted: "It was a week before I was hospitalized, didn't you tell me before, there is a pet shop called 'Pet Home' in the flower and bird market, which has many kinds of cute pets, I was curious, so I went to take a look, and found that there was a squirrel that was particularly cute, so I bought it back." Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ”

"Why didn't you mention it before? If you mentioned it in time, the last time you were sick and hospitalized, we could have found the source of infection more quickly, where is that squirrel now?" Ye Zhenzhen asked.

"The squirrel bit me on the first day he bought it, and in a fit of anger, he sent him to the animal room of the nursing home, I wanted to tell you, but I was bitten by my own pet, it was too embarrassing, if the old man Nan knew, he wanted to make fun of me, so he didn't say it. The fat old man explained with some embarrassment.

Ye Zhenzhen didn't care to investigate the reason for the fat old man's concealment, and asked: "Where is the animal room in the nursing home?" ”

The fat old man stood up from the wicker chair, "Let's go, I'll take you." ”

――

Outside the animal room of the nursing home, the fat old man knocked on the door and shouted: "Hey, Xiao Li, open the door, it's my grandson, I'm going to see how my squirrel is?"

A young man in his twenties answered the door, and as soon as the two looked at each other, the fat old man asked, "Xiao Zhang, why are you?"

Xiao Zhang explained with a smile: "The day before yesterday, Xiao Li took sick leave, and I came to work for him for a few days." ”

Hearing that the original animal keeper was sick and asked for leave, Zhen Zhen's heart sank and asked, "Xiao Li is sick?"

"It's just a cold and fever, Xiao Li is usually in good health, and the cold is carried over by the cold, but this time the cold is a bit bad, so I asked for leave." ”

The sick Xiao Li was not in front of him, and he couldn't tell if it was an infectious disease, so Ye Zhenzhen turned to ask, "Where is the squirrel sent by Grandpa Sun?"

"Over here, follow me. ”

Xiao Zhang led the way in front, a huge animal house, an iron cage was fixed in the corner, and two squirrels were kept in the cage.

"Grandpa Sun, did you buy two squirrels?" Ye Zhenzhen stared at the two squirrels in the cage, turned her head and asked the fat old man.

"I bought one, and the brown hairy one is. ”

The two squirrels in the cage, one with long brown hair, and the other with a slip of black hair on its back, were very conspicuous.

Xiao Zhang, a temporary breeder, explained: "The other one was sent by the child welfare center next door. ”

Ye Zhenzhen asked in surprise: "Why are the animals in the child welfare center in the nursing home?"

"Our nursing home is a semi-public welfare unit, enjoying part of the financial allocation, and the child welfare center is a full public welfare unit, enjoying full funding, and our nursing home shares part of the infrastructure, the animal room is one of them, usually the animals of the two families are kept together, when they need pets for children to play, they will come to pick up, sometimes, the two sides exchange pets is also a common thing. ”

Ye Zhenzhen stared at the black squirrel, feeling a little familiar, very similar to the squirrel sent by Nana more than two weeks ago, Ye Zhenzhen asked, "When did the black striped squirrel arrive?"

"Listening to Xiao Li before, it seems to have been two weeks ago. Xiao Zhang thought for a moment before answering.

Zhen Zhen chuckled in her heart, sure enough, the one she brought back from H City, and then think about it carefully, Grandpa Sun's illness and sending a squirrel to it are the same time, according to the principle of incubation period, Grandpa Sun's illness has nothing to do with the squirrel brought by Nana, that is, the squirrel bought from the original pet store, and now the two squirrels are raised together, and the one brought by Nana may also be infected.

Ye Zhenzhen pointed to the cage and said, "I want to take these two squirrels back to check, they may be the source of this epidemic." ”

Xiao Zhang hesitated, thinking to himself that he was only responsible for raising animals, and did not have the right to give them away.

The fat old man patted Xiao Zhang's shoulder and said, "You didn't know it when you first came, we have to cooperate with the investigation of Chinese CDC experts." ”

The fat old man glanced at Zhen Zhen again, and Zhen Zhen immediately understood, and hurriedly showed her work card.

Seeing Ye Zhenzhen's work card, Xiao Zhang nodded hurriedly, "Cooperate, cooperate." ”

Ye Zhenzhen left the animal room with the squirrel cage, and just walked to the door, she met Nan Zhiqiao accompanied by a leader of the child welfare center.

Ye Zhenzhen asked in surprise: "Senior Nan, why are you here?"

Nan Zhiqiao stared at the squirrel in the cage in Ye Zhenzhen's hand, looked up and said, "I found a clue about the squirrel, so I came over, but I didn't expect that you had already found it first." ”

Ye Zhenzhen thought to herself, I came to the nursing home four times to find the clue, Nan Zhiqiao only came once and found it, Zhen Zhen remembered the previous breeder Xiao Li was sick, and hurriedly said to Nan Zhiqiao: "Senior Nan, the animal keeper here is on sick leave, and he has a history of contact with suspected sources of infection......

"I understand, I will notify the people of the district disease control and control to follow up Xiao Li, and you will now take the squirrel back to the laboratory, carefully examine it, and after determining the pathogen, conduct sequencing, and then conduct evolutionary analysis. Nan Zhiqiao began to arrange tasks for Ye Zhenzhen.

――

On the way there, the experimental results of the district CDC and Zhang Xiaolong came out at the same time, and the PCR method detected hantavirus in the patient's specimens, and the epidemic was undoubtedly caused by hantavirus.

Ye Zhenzhen placed two squirrels in the negative pressure isolation area of the laboratory animal room in the laboratory, collected saliva from the squirrels and drew blood, and began to experiment according to the steps, the PCR results came out quickly, and hantavirus was detected in both squirrels, and this time, the source of infection was also found.

Ye Zhenzhen continued the next experiment, sequencing, doing sequence comparison, while busy with the experiment, Ye Zhenzhen analyzed in her mind, both squirrels carried hantavirus, did both originally carry the virus, or did one of them pass on to the other?

Thinking about Grandpa Sun's onset time and the time when Nana sent the black-haired squirrel there, it can be determined that the pet squirrel that Grandpa Sun bought before must have carried the virus, the pet squirrel came from the "pet home", and where did the poisonous squirrel in the "pet home" come from? The staff in the pet store have also come into contact with the squirrel carrying the virus, which is very dangerous......

Thinking of this, Ye Zhenzhen immediately picked up her mobile phone and called Nan Zhiqiao.

On the phone, Ye Zhenzhen said the results of the experiment just now and the worry and speculation about the "pet home", but unexpectedly, Nan Zhiqiao said an even more shocking news, the "pet home" has four staff members hospitalized for hemorrhagic fever symptoms, including the owner of the pet store and the veterinarian.