The old man began to shed tears as he spoke, and his emotions became excited, Ye Zhenzhen hurriedly comforted and said: "Plagues are generally natural disasters, what we have to do now is to stop the spread of the plague and save more people, we already know the pathogen that caused this epidemic, as long as it is treated in time, the patient can be cured, but there are still many unclear points about the origin and transmission route of this epidemic, we hope to get a little clue from you." Pen %Fun %Pavilion www.biquge.info"

The old man stabilized his emotions and said, "If you ask, as long as I know it, I will definitely say it." ”

Nan Zhiqiao glanced at Zhen Zhen, appreciating her comforting reaction just now, his eyes fixed on the old man again, and began to ask: "What experience did Liu Shishi's family have when they went out before the accident?"

"Do you go out to work in the fields? People in our village go to work in the fields every day, does this count as going out?"

"Where are the crops?"

"It's the banks of the creek in front of the village, and the orchard in the back mountain, not far away. ”

Nan Zhiqiao paused and continued to ask: "For example, what about visiting relatives, going out to purchase, etc.?"

The old man thought for a moment, and said in an uncertain tone: "We are here every five or ten, and we go to the town to catch the market. ”

Ye Zhenzhen didn't understand a little, what does it mean every five or ten?

Zhen Zhen's subtle expression changed in the eyes of the old village chief, and the old village chief explained in time: "That is, every lunar day when the mantissa is five or ten, it is the day to go to the town to catch the market, and the time interval between each catch is basically five days." ”

So that's the case, Ye Zhenzhen immediately asked, "Can you be sure that Liu Shishi's family went to the market before the onset of illness?"

"Probably not, usually our village is basically self-sufficient, but now it is winter, and there are few people in the village who go to the market, even if they have been, it is still four or five days before the onset of the disease. ”

The incubation period of anthrax flashed through Ye Zhenzhen's mind, which is generally one to five days, with the shortest being only 12 hours and the longest being 12 days.

Ye Zhenzhen and Nan Zhiqiao glanced at each other with a sharp heart, the old man's words just now can be regarded as a clue, and they should also check it when they go to the town where they are in the market.

"What about Liu Shishi's relatives? Have you been moving around recently? Relatives have come, or Liu Shishi's family has gone to a relative's house. Nan Zhiqiao asked.

When asked this, the old village chief seemed to suddenly remember something, and said: "Speaking of relatives, there is really a movement, Liu Shishi's daughter married to the next Baizi Village, gave birth to two female dolls, and the two families ran back and forth for three days, and Xiaohu, the eldest grandson of the old man Liu, often went to Baizi Village to see his little cousin. ”

Speaking of Baizi Village, Ye Zhenzhen and Nan Zhiqiao's hearts were raised, and the epidemic found in Province G first appeared in Baizi Village.

"What's the name of Liu Shishi's daughter?"

"Liu Xiuying. ”

Ye Zhenzhen and Nan Zhiqiao raised their heads at the same time and looked at each other, this Liu Xiuying was the daughter-in-law of the deceased family in Baizi Village who was working outside, because she was not at home, so she avoided this plague, but the two old people and two children who stayed in the village were not spared, since Liu Shi of Paolou Village and Liu Xiuying of Baizi Village had dealings, then the epidemic of the two villages may be linked.

Ye Zhenzhen suddenly remembered that the sequence evolution map of Bacillus anthracis made in Province G before, the anthrax strains isolated from Paolou Village and Baizi Village had low homology, but had high homology with the epidemic strains in Japan and Southeast Asia, respectively, and the results of this sequence analysis showed that the epidemic in the two villages was not transmitted from one village to another, but was caused by two strains of Anthracnose with low homology.

The results of sequence analysis showed that the homology of anthrax strains isolated from Paolou Village and the urban area of City B was very high, and there must be a connection between the two.

As soon as Ye Zhenzhen thought of this, Nan Zhiqiao had already blurted out and asked, "Old village chief, do you know if any of the villagers of Paolou Village have been to the urban area of City B recently?"

"No, I'm sure. ”

"There are so many villagers in Paolou Village, how can you be sure?" Ye Zhenzhen couldn't help but ask.

"Recently, I had rheumatism again, and I wanted to go to the city to get medicine, but my legs and feet were inconvenient, so I wanted someone from the village to go to the city to help bring some, and I waited for seven or eight days, and no one went, so I know this. ”

"No one goes to the city...... Ye Zhenzhen thought of other possibilities, "Then are there any people from the city who have ever been to Turret Village?"

"There are no strangers coming, our Cannon Tower Village is located in a remote area, and it is not a tourist scenic spot, so few people usually come. ”

The old village chief said very surely, Ye Zhenzhen felt that the clues of the Cannon Tower Village and the urban area of City B were also going to be broken.

Nan Zhiqiao suddenly asked, "Is there any agricultural and sideline products in Paolou Village that will be sold to the city?"

"Yes, and there are many kinds of vegetables and fruits all year round, as well as poultry and livestock, which can be sold to the city, and the people in the city like our agricultural products the most, what is it called...... Oh, by the way, it's raw, just a few days ago, there were people who came here to collect pigs from door to door. ”

"Do you remember who bought the pigs?" asked Nan Zhiqiao.

"It's a pig slaughterhouse in the town, and they buy the pigs, slaughter them, and then ship them to various sales outlets. ”

Ye Zhenzhen thought to herself, this can explain why the anthrax strain isolated in the urban area of City B is so homologous to the strain isolated from Paolou Village, and the anthrax bacteria are likely to be transmitted from Paolou Village to the urban area of City B through agricultural and livestock products such as pork, if this is the case, this transmission route must be blocked.

Ye Zhenzhen looked at Nan Zhiqiao, Nan Zhiqiao also thought of it in his heart, but he was not in a hurry to leave, but continued to ask the old village chief: "We want to go to the village during the day tomorrow to have a look, especially the families with sick people and the families who have recently sold pigs, the old village chief, can you help tell the people in the village?"

The old village chief agreed, "Okay, I'll ask my youngest son to inform the villagers and ask them to cooperate with your investigation, Director Nan, you want to check the family that sold the pigs, is this plague related to pigs?"

"It's not certain yet, but we won't know until we go to the scene to investigate. ”

"You guys check carefully, you must save the villagers of our Paolou Village. ”

"Rest assured, we will do our best, and the epidemic will be brought under control. ”

Nan Zhiqiao comforted the old village chief a few words before taking Ye Zhenzhen out of the tent.

As soon as he arrived outside the tent, Nan Zhiqiao dialed the phone number of the person in charge of the CDC in City B, "Section Chief Li, we found a clue here, the pig slaughterhouse in the town to which Paolou Village belongs may be related to the spread of the epidemic in the urban area, you can bring someone to contact the municipal industrial and commercial department to check it out." ”

A faint voice of response came from the phone: "Okay, let's go right away." ”

Nan Zhiqiao hung up the phone and walked directly to the tent where she was staying, Ye Zhenzhen followed behind Nan Zhiqiao, and asked after him, "Senior Nan, what are we doing now?"