The place where the new cases were found is not far from Baizi Village, where the outbreak first broke out, and there must be a connection between the two, and the anthrax epidemic that Nan Zhiqiao went to the urban area of City B to deal with may also be related to the epidemic in the two villages. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

Ye Zhenzhen thought about all kinds of possibilities to herself, and out of the corner of her eye, she caught a glimpse that Zhou Yanan had left the computer room and ran in the direction of the laboratory. ”

Ye Zhenzhen also sped up sorting out the downloaded anthrax strain sequences, and then analyzed them with software, and after some calculations, the sequence comparison chart soon appeared on the computer screen.

Looking at the sequence comparison chart on the computer screen, the anthrax strain isolated from Baizi Village is very close to the homology of an epidemic strain in Southeast Asia, and the two strains are assigned to the same area of the evolutionary tree, and the homology is as high as 99.9%.

Such a high degree of homology indicates that the two strains come from the same natural endemic area. But how did the strains circulating in Southeast Asia end up in Baizi Village? Are they brought by migratory animals or by tourists?

No matter what the reason is, all the thoughts now are speculation, and to finally determine the reason, it still depends on the on-site investigation of Senior Nan's side.

Ye Zhenzhen picked up her mobile phone, dialed Nan Zhiqiao's phone, and explained the results of her analysis in detail, Nan Zhiqiao was also slightly surprised, and asked Ye Zhenzhen to conduct sequence analysis of the two epidemic specimens in the urban area of City B and Paolou Village that she had just sent today, make an evolutionary tree, and tell him the results as soon as possible.

Ye Zhenzhen accelerated the speed of the analysis in her hands, and at the same time contacted Zhou Yanan in time, that night, the results of the patients in the urban area of City B came out, and in the early morning of the next day, the results of a family of six in Paolou Village also came out, Ye Zhenzhen conducted sequence analysis on several anthrax strains together, and the complete evolutionary tree appeared on the computer screen at noon the next day.

Ye Zhenzhen frowned, staring at the screen, the entire evolutionary tree of Bacillus anthracis branched out with sequence homology, the strains isolated from Baizi Village are on the same branch as the anthrax epidemic strains in Southeast Asia, while the strains isolated from the urban area of City B and Turu Village have very high homology, and they are all on the same evolutionary branch as the anthrax strains prevalent in Japan.

Baizi Village and Paolou Village are two natural villages within the jurisdiction of City B of Province G, and the two villages are next to each other, and there is an anthrax epidemic at the same time, and there must be a connection between the two, but the anthrax strain isolated from Baizi Village has the closest homology with the epidemic strain in Southeast Asia, and the anthrax strain isolated from Paolou Village and the urban area of B City has the closest homology with the epidemic strain in Japan.......

No matter why this phenomenon is so weird and strange, let's notify Senior Nan first.

Ye Zhenzhen sat in front of the computer screen in the computer room of the experimental building of the G Provincial Center for Disease Control and Prevention, dialed Nan Zhiqiao's mobile phone number, and Nan Zhiqiao's magnetic voice came from the mobile phone, "Zhenzhen, what's the matter?"

Ye Zhenzhen went straight to the point, and talked in detail about the analysis results she had made in the past few days, and also said the sequence comparison diagram of computer analysis, the evolutionary tree, and the questions about the results in her heart.

After listening to Ye Zhenzhen's statement, Nan Zhiqiao on the other end of the mobile phone paused slightly, did not question the result, but asked rhetorically: "Zhenzhen, are you still in the computer room?"

"Yes, as soon as the results of the computer analysis came out, I called you directly to report, how about it? I worked overtime overnight to do it, the speed is okay, I hope it will be helpful to your on-site investigation." ”

"Very well, you can go to lunch first. ”

Nan Zhiqiao rarely praised Ye Zhenzhen at work, Zhen Zhen's heart suddenly became happy, and she was tired of working overtime for two days in a row, because Nan Zhiqiao said "very good", as if they had disappeared, and she was full of enthusiasm, I really hope that I can go to the epidemic site now, and follow Nan Senior, Ye Zhenzhen asked with hope: "Nan Senior, my work here at the G Provincial Center for Disease Control and Prevention has been completed, can I go to the epidemic site with you?"

Nan Zhiqiao didn't agree directly, "You have lunch first, and the future work arrangements will be discussed in the afternoon." ”

Ye Zhenzhen glanced down at the mechanical watch on her wrist, it was already twelve o'clock at noon, no wonder her stomach was rumbling with hunger, but if Senior Nan didn't agree to go to the scene by herself, and there were no new case specimens to send, there would be nothing to do in the afternoon, and now the results of the analysis are full of questions, and she can't go to the scene, Ye Zhenzhen only feels a little uncomfortable in her heart, "Okay, I'll go to lunch first." ”

"Okay, goodbye. ”

Nan Zhiqiao was about to hang up the phone, Ye Zhenzhen couldn't help but have questions about the results of the morning's analysis, and asked: "Wait a minute, Senior Nan, what do you think of the analysis results I reported just now? Do you have any theories or examples that can explain this strange result?"

"In the current situation, excluding sequencing or calculation errors, it is most likely that Bacillus anthracis is spreading across regions through vectors, and we will adjust the direction of the epidemiological investigation in the field based on the results of laboratory analysis. ”

"Oh...... Do you want me to go to the scene to help?" Ye Zhenzhen turned the topic to the matter of going to the scene again.

This time, Nan Zhiqiao paused slightly and asked, "Do you really want to come over?"

"Uh-huh, uh-huh. Ye Zhenzhen nodded hurriedly.

"Okay, in the afternoon, there is a car from the CDC in Province G to deliver emergency equipment to the CDC in City B, you come with the car, and after you arrive, we will coordinate the next work. ”

Senior Nan actually agreed, Ye Zhenzhen almost jumped up from the chair in front of the computer happily, originally thought that he would let himself stay in the provincial disease control until he went back, but he didn't expect to really be able to go to the epidemic site with Senior Nan, the opportunity to learn from the great god on the spot is rare, so I have to prepare well, "Thank you, Senior Nan, I'll go and prepare." ”

After hanging up the phone, Ye Zhenzhen hurriedly ran back to the guest house, packed her things, had a meal at the restaurant with her luggage, and hurriedly ran to the car transporting emergency supplies, waiting for departure.

The car is an eight-seater microbus, with some emergency supplies piled up in the back row, and two people sitting in the middle row, one of them, Ye Zhenzhen knows, is the speaker who spoke at the report meeting when he first came to the provincial CDC that day, is the deputy director of the G Provincial CDC Emergency Transmission Institute, surnamed Wang, about forty years old, and a young man who is only in his twenties is sitting on the side, Ye Zhenzhen nodded politely to the two, which is regarded as a greeting.

Director Wang responded with a smile, "Director Nan called me at noon and said that Mr. Ye is going to go to the scene with the car, since Mr. Ye you came, the progress in the laboratory has been very fast." ”

Listening to Director Wang's slightly complimenting words, Ye Zhenzhen was a little embarrassed, "Zhou Yanan's experiment was done quickly, I just helped analyze the sequence." ”

Ye Zhenzhen sat firmly on the empty seat next to the two of them, and casually put the duffel bag in the back row, and the duffel bag was attached to the emergency supplies in the back row.

The emergency supplies are some protective clothing, brand new and unpacked, Ye Zhenzhen touched it smoothly, turned around and asked, "These are the emergency supplies that are to be sent to City B, right?"

"Some of them were sent to the Center for Disease Control and Prevention in City B, and the rest were sent directly to Paolou Village. ”

"Why are you sending it to Turret Village?"