The atmosphere was very harmonious at the moment, and they hadn't been together for a while.

They all have their own homework to do, and all three of them have gone to internships except for Zhang Shanshan.

If you want to graduate, you have to write a thesis, you have to check a lot of information, and there are too many things to occupy their time.

Even if they are one step ahead on the way forward, it does not mean that those behind will not catch up, so they must work hard.

As a result, the four people in their dormitory were able to go out to dinner together and even fewer in the future.

All four of them thought of this and cherished the opportunity now, and they might be able to meet friends after they left society.

But it is more likely that you will never be able to meet friends who are so suitable for your temperament, and when you go to society, it will only make people's friendships mixed with more benefits.

Once interests are involved, then it is good to be the most ordinary friend in the end, but fortunately, when you go to college, you will make friends for life, which is enough.

After the four of them ate slowly, they ran to the observation deck to see the night view, there are few buildings taller than this building in the whole Z city, sit on the observation deck and look down, you can see that the whole city is brightly lit, and there is a lot of traffic.

After Zhang Shanshan sat down, she didn't care much about the night scene, she has seen too much of the night scene, and now she is immune to this kind of scene, and the other three are a little interested.

After waiting for a while, she finally asked, "Xiao Xiao, I want to ask you one thing, if you have a child, do you want to vaccinate the newborn?" ”

She wants to be a good mother, and is studying how to be a good mother, and it is said that she will also let Dongdong learn how to be a good parent together.

Several girls in the dormitory looked at Zhang Shanshan with some interest, and they didn't expect to meet a friend who aspired to be a good mother.

In order to achieve this goal, Zhang Shanshan looked at a lot of professional knowledge, and also specially recorded some precautions for infants and young children.

And today I just want to ask about vaccination, and now her mind is a little confused.

After Ling Xiao heard this, he was a little surprised, it is normal for newborns to be vaccinated from birth.

So why did Zhang Shanshan ask this? There must have been some thought that influenced her thoughts.

"You say, do you want to vaccinate your child?" Ling Xiao asked rhetorically.

As she spoke, she looked at the other roommates, and Zhang Shanshan looked at them.

"I remember if I didn't get vaccinated, I was afraid that I wouldn't be allowed to go to school." Xiyan said.

I remember that when I signed up for primary school, I always brought a special vaccination record book and went to school to take the shot.

Their generation has been vaccinated a lot, and the earliest vaccine was given 24 hours after birth.

Qian Rui said: "To get vaccinated, for example, after people are bitten by cats and dogs, they must hurry up to get a special vaccine. ”

"I know this, if you are bitten by a cat or dog, you should first rinse the wound, you can rinse it with tap water, and after rinsing, let the wound be exposed, because the rabies virus is anaerobic." Xiyan said.

Zhang Shanshan nodded and said, "I'm not talking about the rabies vaccine, but the vaccine that the child is born with, is it necessary?" ”

Xiyan and Qian Rui want to say that of course they have to get vaccinated, otherwise why would the country let everyone get vaccinated for free?

But in the end, they didn't say anything, but looked at Ling Xiao, hoping that she would answer.

"You need to fight, unless it's a weakened immune system, low." Ling Xiao said.

"Also, you can't fight even if you have allergies and are sick."

"But on the Internet, many people in Europe and the United States say that vaccination is not good."

After listening to Zhang Shanshan's words, Ling Xiao knew that the expectant mother was at a loss now.

Qian Rui opened her mouth after hearing this, but she still didn't speak, she is a person who mixes more on the Internet in the dormitory.

The news on the Internet is fake in many cases, but when creating fake news, it is often mixed with the real thing, and it is difficult to distinguish between them.

This has led to a lot of fake news circulating on the Internet, and over time, the so-called fake news has become true news in the minds of some people.

"But some people say that after vaccination, children will affect their development and become infertile. There are also people who die directly after vaccination. Zhang Shanshan said.

As an expectant mother, she wants to provide the best environment for her children, and she really wants to know more knowledge, so she came to ask Ling Xiao.

"Affect development? Infertility? Hehe! We've been vaccinated since the founding of the People's Republic of China, right? I remember it was cowpox, to prevent smallpox. ”

"So, Shanshan, do you think our generation and the previous generation have affected development? Is there any infertility? ”

Burst! Xiyan smiled, "When the country was founded, it was about 500 million people, and now it is 1.3 billion. ”

"It's only after the introduction of compulsory family planning that it hasn't increased much."

Xiyan's words made Zhang Shanshan suddenly realize.

What affects development, infertility does not exist.

"Of course, there are certain dangers associated with vaccination." Ling Xiao said.

There is no doubt about this, in fact, there have been cases of people who have died after being vaccinated.

When Zhang Shanshan heard this, she sat up straight all of a sudden, and she looked at her roommate seriously.

"The most common vaccines are against the original strains of viruses and bacteria, and various methods are used to attenuate and inactivate the virus."

"Attenuated? Inactivated? "Everyone is a little confused," that is, to reduce the virulence of the virus and become a dead vaccine, and the human body will be less harmed. ”

"For example, the BCG vaccine to be given to newborns is an attenuated vaccine, and the vaccine still has a certain degree of activity, but the virus is less virulent, has a long anti-infection time, and even does not need to be revaccinated."

"There are also disadvantages of this vaccine, the active vaccine will make individuals with low immunity sick, mutations to restore the virulence of the virus, but scientists have been working on making the vaccine unable to recover its virulence over the years."

The other three people looked at each other a little, and it turned out that they were really dangerous, so they saw Ling Xiao and said: "Vaccination is not for everyone." ”

"I also specifically mentioned that vaccination is contraindicated, and everyone should pay attention before vaccination."

The three of them thought about it for a moment, as if they had just heard about it, and were now reminded to think about it again.

"Yes, Xiao Xiao just said that the immune system is defective, low, sick, and allergic."

"None of these situations can be fought." Zhang Shanshan thought for a while and said.

Others are also reminiscing.

At the same time, it strengthens its memory.

These considerations are useful.

"When you get vaccinated, the doctor will remind you."

"Know that vaccines are there to protect people, not to kill people." Ling Xiao said.

"There is also an inactivated vaccine, which has weak immunity, and this may require multiple vaccinations."

"In addition to the two mentioned above, there are also toxoid vaccines, subunit vaccines and peptide vaccines, vector vaccines, nucleic acid vaccines, edible vaccines, and so on."

Hearing this, the others were a little confused, because they only knew that they went to the hospital or the CDC to get vaccinated, and they didn't think that there were so many ways to make vaccines.

Ling Xiao said: "Why are there multiple ways to make a vaccine? It's researchers who want to find safer ways to make vaccines that make people safer. ”

The three of them listened carefully, they may be elites in their own industry in the future, but they are novices in medicine.

Ling Xiao glanced at the three of them, in fact, in her opinion, there is indeed a danger in vaccination.

But it is more dangerous not to get vaccinated because of the viruses and bacteria that make the vaccine.

All of them are highly contagious, and it is easy to be infected if you don't get vaccinated.

After vaccination, the possibility of infection is greatly reduced.

It's a safe way to stay safe.

In addition, she thought of something very surprising and was about to say it.

"You know what? Human beings actually have virus genes in their genes, which are the traces left by assimilation. ”

Hearing this, everyone was ignorant, what? At this moment, they all have a feeling that they have heard it wrong, and the virus gene is actually reflected in humans?

Ling Xiao told them that in addition to the indigenous African race, which does not have the genes of the Ni people, the human beings who are the descendants of Homo sapiens have the genes of the Ni people, and after thinking about it, they had to accept this possibility.

After all, DNA can't deceive people, no matter what means Homo sapiens used in the early years to get the genes of the Ni people, as a descendant, they can only accept it, can they still eliminate the so-called things? It simply can't be done.

Maybe even after being eliminated, they will not be the current human beings, and as future generations, they are powerless to do anything but accept this fact.

As a result, Xiao Xiao now told them that there is still a virus gene in the human gene, which is really a little confusing.

In the past, they thought that human DNA and RNA were unique.

Even if there are Ni genes, it is a gift between relatives.

Homo sapiens and nuns are true relatives.

As a result, a new discovery came.

Do humans have viral genes in their DNA?

Qian Rui blinked her eyes and said, "Is this true?" ”

"Really, more real than pearls, it's magical."

"Over the years, scientists have not stopped exploring the mysteries of humanity itself."

"This is a scientist who has studied human DAN, and this discovery has been made."

"There is even an idea that it is the participation of ancient viruses that created mammals, that is, humans and all mammals, and if there were no virus genes, maybe they would not have evolved into mammals."

Others know that there are so many secrets in human genes, and there may be.

The impact of the virus on people is much more than they imagined, and it is even more intimate.

It's just that they can't laugh or cry, how to describe this feeling?

The more you know, the more you realize that you don't know.

Today is also a popular science time.

"How? Not surprised? Ling Xiao asked.

Accidentally! Of course, it was quite a surprise, and the three of them nodded again and again.

"Shanshan, do you need to be vaccinated against the virus? I'd like to give you an example that everyone knows. ”

"That is, everyone should be most familiar with the smallpox virus, do you know what its fatality rate is?"

The three of them glanced at each other, they knew about this virus, but they didn't know what the fatality rate was.

But everyone knows one thing: smallpox is dangerous and contagious, and Qian Rui knows that the Inca Empire in the Americas was destroyed by the smallpox virus.

"The smallpox virus has a fatality rate of 30 percent, which means that 30 out of 100 people will die from the smallpox virus." Ling Xiao said.

"This is to let the immune system work without a vaccine, and 70% of the people who can survive are alive, and even if they are alive, they will often have pockmarked faces."

Ling Xiao paused when he said this, looking at the others, wanting to see if they understood? The others nodded, the ceiling was terrifying.

"If I had anything to do with the smallpox vaccine, I would have known that it was cowpox that prevented smallpox, and smallpox had been eradicated." Qian Rui said.

"Yes, the WHO declared smallpox eradicated, the only virus that has been eradicated, and this generation has not been vaccinated against cowpox."

"However, it seems that the so-called smallpox virus still remains, and there is still the original strain in some laboratories." Xiyan suddenly interjected.

"There are still specimens in a few labs on the surface, but who knows how many there are in private." Ling Xiao said in his heart.

This belonged to her own speculation, and she did not say it out loud because there was no evidence.

"Why are there still specimens? It should be all gone. ”

"If you don't keep it, how can you find the most primitive virus if you need to study it?"

The three of them widened their eyes, but they all agreed that the smallpox virus should be destroyed.

And Ling Xiao said at this time: "The biggest question now is, can you say that these people's statements must be wrong? ”

Organisms on Earth sometimes need diversity, and the smallpox virus is also a part of the organisms on Earth, wouldn't it be bad to remove them?

"There's no way to know whether it's right or wrong, maybe it's only many years before our descendants know whether it's good or bad to keep the smallpox virus." Ling Xiao sighed.

"But future generations can't give warnings to modern people from the future, even if modern humans get warnings, do we dare to believe it?" Ling Xiao asked.

"There was a scene in science fiction movies where both sides sent robots back in time and space to protect or kill the leader of the Childhood Resistance Alliance, which side would you trust?"

After Ling Xiao's words came out, the three of them suddenly remembered the famous science fiction movie, which was filmed for several episodes in a row, and the pig's feet were even more well-known.

"Xiao Xiao, you're talking about the Terminator, right? The actor has experienced a lot of ups and downs, filming one after another. Qian Rui finally spoke.

"When we watch a movie, we as viewers have God's perspective and know who is the real name? Who is the villain? You can choose a stand. ”

"But when it comes to whether or not to keep the smallpox virus, even if a future messenger arrives, he will give his opinion."

"The problem is that we don't know if this messenger is positive or negative, so what should we do?"

When Ling Xiao said this, he shrugged his shoulders, he really couldn't decide.

In making every choice.

No one can guarantee that it is correct.

And human beings can only cross the river by feeling the stones when making choices again and again.

Success may be successful, or failure may occur, and humanity must suffer the consequences of the right or wrong choices.

There are even times when the path chosen may prove correct at first, only to be found to be fundamentally correct many years later.

Or it may be that the path that I felt was wrong at the beginning turned out to be able to walk through it turned out to be the right path.

And the others listened to Ling Xiao's words, but they also remained silent, not knowing what to do?

They don't know what to choose.

I don't know the direction at all.