Half an hour later.

The virus is infected and spread very rapidly.

All major cities were wiped out, and no one in ten people who had not yet shown symptoms of infection were left. The streets were filled with zombies, and when they saw living people, they flocked to swallow them alive.

At this time, the floating castle was still quite stable.

Under the dual control of Hermione and rhythm virus, no major casualties have occurred yet.

However, the growth rate of infected people is relatively fast. In the "Glutty Snake" team, there were originally twenty-six humans, but only seventeen of them were left in the back row, but they had not completely become zombies.

Inside the medical school laboratory.

Professor Sun, who was fully armed, carefully picked up the reagent, poured it into the decanter, observed the information changes on the screen for a while, turned around, and looked at Chen Yu.

"Principal, can you give me some muscle tissue from the infected person?"

"No problem." Chen Yu nodded and pointed: "The one in front, walk twenty steps forward."

The tall and thin boy immediately took a step and walked more than ten meters. The team moved forward, and outside the laboratory window, the infected person in the back row was exposed.

Professor Sun held the scalpel in his left hand and the glass plate in his right hand. He walked forward. He first glanced at a giant panda on the left, then looked at the infected person on the right, and asked, "Can I cut some of that panda's meat?"

"Cut whatever you want, it will be completely broken down."

"Then I'm not polite." Professor Sun licked his lips, raised his scalpel and stabbed it into the abdomen of the infected giant panda.

Onlookers: "…"

"Swoosh!"

"roar!"

Accompanied by the crisp sound of muscle cutting, the giant panda was cut open in pain, and a pool of black mud-like substances flowed out of it.

"Infected fat?" Professor Sun's eyes lit up, he quickly handed out the plate, collected the fat, and stored it carefully in the refrigerator.

Then, he used the same "butcher" technique to collect two muscle tissues that infect humans.

"Come back, principal."

"Okay, the one in front, go back."

"I understand!" The tall and thin student nodded and turned around, dragging the long queue, like a gluttonous snake, circled around the narrow corridor, followed the "tail" of the team, and took Chen Yu to the laboratory window.

"I feel that this sand sculpture virus among you is more powerful than a mutant virus." Professor Sun said.

"It's a rhythm virus! It's not a sand sculpture!"

"Okay, rhythm virus." Professor Sun took a step back, checked his protective suit for half a minute, and confirmed that there was no leakage. He sat on the chair and said: "Some research results have been obtained about this mutant virus that swept the world. Although it is still very simple, it is still okay to explain its contagious mechanism."

"This is enough." Chen Yu immediately adjusted the camera angle and left the position to the other party.

"Start now?"

"Wait a minute. Before you explain, I have a small question."

"Excuse me."

"All humans will soon become extinct, and at most one day the disaster experience ends. Why do you still have to collect so many experimental materials for infected people? You can't use them all at all, right?"

"I've been prepared for a long time." Professor Sun smiled, pointed to the fully enclosed protective suit on his body, and turned around to show his portable oxygen tank: "Since the principal, you were broadcasting the asteroid disaster, I knew that the virus would come, so I changed my equipment in advance. So I should still be healthy now and there is no possibility of infection."

"Oh!" Chen Yu suddenly realized: "You want to survive in the end of the world for a while and specifically study this virus?"

"Yes." Professor Sun nodded: "I am a virus researcher. If you study this virus that has never appeared in human history, you will have considerable growth and gains. But if you use the word "staying alive", isn't it a bit less civilized?"

"Don't care about the details." Chen Yu called out and pointed at the camera: "Back to the topic. Tell the audience in front of the screen about this virus."

“Where to start?”

“Just start from the beginning.”

"Oh." Professor Sun nodded again and cleared his throat: "In the early universe, gravity grabbed the atomic clouds and shaped them into stars and the Milky Way. The formation of stars is bound to..."

Chen Yu: "…wait...wait for a moment Professor Sun. Is it a bit too much to start? Or let's move the time backward?"

"Then move to when I was a child. In 1962, I was born in a small county town in Sichuan Province. My father was a local doctor in the city..."

"Move to half an hour ago." Chen Yu interrupted: "Just talk about viruses. I will go to read the others when you write your autobiography."

"Half an hour ago?" Professor Sun spread his hands regretfully: "Yes. Simply put, this virus is a common virus variant, but the ingenious mechanism is far beyond the imagination of normal people. It can cause this kind of Resident Evil-like situation, which really broadens my horizons."

"Common virus? Which one?" asked the old professor who stood aside and his facial blood vessels were completely black.

"Bacteriophage." Professor Sun's eyes flashed with inexplicable spirit.

"Phage?"

"That's right. It's the virus, phage, that is the most indispensable virus in nature, especially for organisms."

【What is a phage?】

【Same question.】

【The most common virus, specially designed for bacterial killing.】

[I have seen the picture and looks like an alien spacecraft.]

【+1, Every time I see a bacteriophage, I feel that it is from an alien.】

[Don't phages kill bacteria? Why can they attack people?]

After blinking, Chen Yu said, "Professor Sun, although I know phages very well, most of the audiences in the live broadcast room are not clear. Please explain in detail what phages are."

"Oh?" Professor Sun was surprised: "Principal, do you know the virus very well?"

"I know a little bit." Chen Yu said modestly.

"Then tell me, what is a bacteriophage?"

"…Who, what is Professor Sun's annual bonus?"

"No, I won't ask." Professor Sun waved his hand quickly: "I'll just say it."

"Tell me."

"Phages are viruses that invade bacteria. They are mainly parasitized in live bacteria and have strict host specificity. In layman's terms, they are the nemesis of bacteria and are indispensable and important roles in the biological world on earth. Without this virus, at the rate of bacterial reproduction, there would be no living space for other organisms in the world. Therefore, phages are also one of the few viruses that are beneficial to humans."

"Is the source of this viral disaster a bacteriophage?"

"right."

Chen Yu thought: "Since it is a beneficial virus, why does it attack humans?"

"It did not attack humans." Professor Sun stood up with a little excitement and danced: "This is the essence! From beginning to end, the target of the phage attack is not humans! It is still attacking bacteria!"

"Just attacking bacteria, why does this cause?" Chen Yu looked around the infected person at the end of the team.

"Its aggressiveness has become stronger. One tail has mutated into four. Each tail has a separate section of RNA genetic information. This has increased their aggressiveness against bacteria countless times. And after injecting genetic information into the bacteria, in order to continue their survival, it will cleverly help bacteria accelerate their reproduction in a short period of time."

As he said that, Professor Sun picked up the tablet computer on the table and showed the pictures taken by the electron microscope: "Look at this place, there were originally one hundred bacteria. After being invaded by a mutant phage, the number of bacteria can quickly expand to tens of millions. Whether it is humans or animals, where is the most bacteria in the body?"

"Gointestinal."

"That's right, it's the intestine! When the bacteria inside are divided unbalanced, they will soon swell through the capillaries of the intestines, flow into the blood circulation, and invade the liver, lungs, brain, and muscle tissue. At this time, under the control of the phage, the bacteria will release a special enzyme, causing the error of the human body's electron transfer chain, and greatly increase the chance of giving electrons to oxygen, which will reduce oxygen to hydrogen peroxide."

“Hydrogen peroxide?”

"It is the main substance of hydrogen peroxide. Everyone knows hydrogen peroxide, right? Disinfection water that will bubble when applied to the wound."

“It can kill sterilization!”

"Yes, it has strong bactericidal ability." Professor Sun nodded: "This leads to large-scale death of the bacterial flora. And the phages produced in batches will escape from the cell walls of the bacterial dissolved, infect and reproduce more bacteria, and eventually cause the human body to collapse."

"What's wrong here?" The old professor frowned: "Phages infect bacteria, reproduce bacteria, let bacteria secrete enzymes, stimulate the human body to produce hydrogen peroxide and sterilize bacteria, and then come out on their own... It's too troublesome. Isn't it more reasonable to swell the cell wall like other viruses?"

"The most wonderful thing about it is here!" Professor Sun pointed to an infected person: "Didn't you find these zombies spitting bubbles?"

"You mean..." The old professor was shocked.

"Yes. Hydrogen peroxide, or hydrogen peroxide, will undergo a decomposition reaction when encountering blood, combining the o atoms into oxygen and producing a large number of bubbles. Since these blood are filled with dead bacteria, the content of phage in the bubbles produced can be imagined."

【Damn, it's so amazing…】

[I understand. The burst of bubbles will spray the virus far away. As long as a virus is absorbed by organisms, more and more bubbles will be created. Made, and the scalp will be numb.]

[There is no shortage of phages in the earth's ecosystem, so this virus has no solution.]

[The calculations are meticulous and interlocking, this virus cannot be born naturally.]

[If humans in the future want to self-destruct, they may send a biologist...]

[The more advanced technology is, the more you can feel the fragility of human civilization.]

"Okay, let's finish this explanation. Let's make a summary." Professor Sun looked at the camera and said seriously: "The phages inject RNA into the bacteria, manipulating bacteria to produce viruses and accelerate division."

"Because bacteria are mostly in the stomach and intestines, and splitting requires energy, it will stimulate the damaged brain to produce hunger. This is the origin of the so-called zombies. The bubbles spit out at the same time enhance external infectivity."

"When an infected person is injured and leaks blood, the blood will come into contact with oxygen in the air, and a large amount of hydrogen peroxide is increased. These hydrogen peroxides kill bacteria, release viruses, and then produce hundreds of millions of bubbles..."

"This is how the mutant virus works."

"Just artificially modify a little gene of the bacteriophage, an irreplaceable beneficial virus has become a devil that destroys the entire ecosystem."

"So in my opinion, any artificial intelligence crisis or asteroid impact... is far less fierce than the viruses supported by human nature, and there is no way out."
Chapter completed!