The atmosphere at the moment was very harmonious, and it had been a while since they had been together.
They all have their own homework to do, and all three except Zhang Shanshan have done internships.
If they want to graduate, they have to write a thesis, check a lot of information, and there are too many things occupying their time.
Even if they are one step ahead on the road ahead, it does not mean that those behind them will not catch up and they must work hard.
This resulted in the four people in their dormitory having few opportunities to have dinner together, and even fewer opportunities to have gatherings in the future.
The four of them all thought of this and cherished the opportunity now. They might be able to meet friends they get along with after they go out into society.
But it is more likely that you will never meet friends who are so in tune with your temperament. In society, it will only add more interests to people's friendships.
Once interests are involved, it's good to be the most ordinary friends in the end. Fortunately, you make friends who will become lifelong friends when you go to college, and that's enough.
After the four of them had a leisurely meal, they ran to the observation deck to see the night view. There were only a few buildings higher than this building in Z city. Sitting on the observation deck and looking down, they saw that the whole city was
The lights are bright and there is a lot of traffic.
After Zhang Shanshan sat down and looked at the night scene, she didn't care much. She had seen too many night scenes and was now immune to this kind of scene. The other three were somewhat interested.
After waiting for a while, she finally asked: "Xiao Xiao, I want to ask you something. If you have a child, do you need to vaccinate the newborn?"
She wants to be a good mother and is studying how to be a good mother. It is said that she also wants Dongdong to learn how to be a good parent.
Several girls in the dormitory looked at Zhang Shanshan with some interest, never expecting to meet a friend who was determined to be a good mother.
To achieve this goal, Zhang Shanshan read a lot of professional knowledge and even recorded some precautions for infants and young children.
Today, she just wanted to ask about vaccinations, but now her mind was a little confused.
After hearing this, Ling Xiao was a little surprised. It is normal practice for newborns to be vaccinated from birth.
So why did Zhang Shanshan ask this? There must be some trend of thought that affected her thoughts.
"Do you think we should vaccinate our children?" Ling Xiao asked.
While speaking, she looked at the other roommates, and Zhang Shanshan looked at them.
"I remember that if I don't get vaccinated, I'm afraid I won't be allowed to go to school," Xiyan said.
I remember that when registering for primary school, I always brought a special vaccination record book with me, and I also took the vaccination when I went to school.
People of their generation have received a lot of vaccines, and the earliest vaccine should be given twenty-four hours after birth.
Qian Rui said: "It is necessary to vaccinate. For example, after people are bitten by cats and dogs, they must quickly get special vaccines."
"I know this. If you are bitten by a cat or dog, you should first rinse the wound with tap water. After rinsing, the wound should be exposed to the outside because the rabies virus is anaerobic." Xi Yan said.
Zhang Shanshan nodded and said: "I'm not talking about the rabies vaccine, but the vaccine given when the child is born. Is it necessary?"
Xiyan, Qian Rui really wanted to say that of course we should get vaccinated, otherwise why would the country let everyone get vaccinated for free?
But they didn't say anything in the end, but looked at Ling Xiao, hoping she would answer.
"You need to take a shot unless your immune system is defective or low." Ling Xiao said.
"Also, if you have allergies, you can't take them even if you're 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 mother-to-be was at a loss as to what to do now.
After hearing this, Qian Rui opened her mouth and still didn't speak. She is the person in the dormitory who spends a lot of time online.
News on the Internet is often false, but when false news is created, it is often mixed with real things, making it difficult to distinguish.
This has led to a lot of false news being circulated on the Internet, and over time the so-called false news has become true news in the minds of some people.
"But some people say that after being vaccinated, children will have trouble with fertility and become infertile. Some people will die directly after being vaccinated." Zhang Shanshan said.
As an expectant mother, she wanted to provide the best environment for her child. If she really wanted to know more, she came to ask Ling Xiao.
"Affects fertility? Infertility? Haha! We have 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 any influence on fertility? Is there any infertility?"
Poof! Xi Yan laughed, "When the People's Republic of China was founded, the population was about 500 million, but now it is 1.3 billion."
"This is despite the implementation of compulsory family planning, which has not increased much."
Xi Yan's words suddenly made Zhang Shanshan realize.
There is no such thing as infertility or infertility.
"Of course there are certain risks in vaccination," Ling Xiao said.
There is no doubt about this. In fact, there are cases of death after vaccination.
When Zhang Shanshan heard this, she sat upright and looked at her roommate seriously.
“The most common vaccines use various methods to attenuate and inactivate the original strains of viruses and bacteria.”
"Attenuated? Inactivated?" Everyone was a little confused. "It means reducing the toxicity of the virus and turning it into a dead vaccine. The human body will be harmed less."
"For example, the BCG vaccine required for newborns is an attenuated vaccine. The vaccine still has a certain activity, but the toxicity of the virus is reduced, and it has a long anti-infection effect. It may not even require revaccination."
"This kind of vaccine also has shortcomings. The active vaccine can make people with low immunity sick, and mutations can restore the virulence of the virus. However, over the years, scientists have been working hard to make the vaccine unable to restore its virulence."
The other three people looked at each other a little bit. It turned out that it was really dangerous. When they saw Ling Xiao, they said: "Vaccination is not available to everyone."
"I just remembered that I specifically mentioned that there are contraindications for vaccination. 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 now they were reminded to think about it again.
"Yes, Xiao Xiao just said that the immune system is defective, low, sick, and allergic."
"You can't fight in these situations." Zhang Shanshan thought for a while and said.
Others were thinking about it too.
At the same time, it strengthens your memory.
These notes are very useful.
"The doctor will remind you when you take the vaccine."
"You must know that the vaccine is to protect everyone, not to kill people." Ling Xiao said.
"There is also an inactivated vaccine, which has weak immunity and 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, etc."
Hearing this, others were a little confused, because they only knew that they had to go to the hospital or the Centers for Disease Control and Prevention to get vaccinated, and they had never thought that there were so many ways to make vaccines.
Ling Xiao said: "Why are there multiple ways to make vaccines? Researchers want to find safer ways to make vaccines to make humans safer."
The three of them listened carefully. They might become elites in their own industries in the future, but they would be novices in medicine.
Ling Xiao glanced at the three people. In fact, in her opinion, vaccination is indeed dangerous.
But not getting the vaccine is even more dangerous because the vaccine is made from viruses and bacteria.
They are all highly contagious and can be easily infected if not vaccinated.
After the injection, the possibility of infection is greatly reduced.
This is a way to stay safe.
In addition, she thought of something very surprising and planned to tell it.
"Did you know? Human genes actually contain viral genes, which are traces left after assimilation."
Hearing this, everyone looked confused. What? At this moment, they all felt that they had heard wrong. Viral genes are actually reflected in humans?
Ling Xiao told them before that except for the indigenous African race, which does not have Neanderthal genes, humans who are the descendants of Homo sapiens all have Neandertal genes. After thinking about it, they had to accept this possibility.
After all, DNA cannot deceive people. No matter what methods the early Homo sapiens used to obtain the genes of the Neanderthals, the younger generations can only accept it. Is it possible to eliminate the so-called things? It is simply not possible.
Even if they are eliminated, they may no longer be the human beings they are today. As future generations, they are powerless and can only accept this fact.
As a result, Xiao Xiao now told them that human genes actually contain virus genes, which is really confusing.
In the past, they thought that human DNA and RNA were unique.
Even if you have Nigerian genes, it is still a gift from relatives.
Homo sapiens and Homo sapiens are real relatives.
As a result, a new discovery came.
Are there viral genes in human DNA?
Qian Rui blinked and said, "Is this true?"
"It's true. It's more real than pearls. It's so magical."
"Scientists have not stopped exploring the mysteries of human beings over the years."
"This is a result of scientists studying human beings, and this is the result."
"An idea has even been put forward: It was the participation of ancient viruses that created mammals, that is, humans and all mammals. Without the addition of virus genes, mammals may not have evolved."
Only others will know that there are so many secrets in human genes, and maybe there will be more.
The virus affects people much more deeply and intimately than they imagined.
It's just that they are a little bit dumbfounded. How should they describe this feeling?
The more you know, the more you will realize there are too many things you don’t know.
Today is also a time for popular science.
"How is it? Are you surprised?" Ling Xiao asked.
Accident! Of course it was quite unexpected. The three people nodded repeatedly.
"Shanshan, do you need to be vaccinated against the virus? I would like to give you an example that everyone knows."
"That is, the smallpox virus that everyone should be most familiar with is the smallpox virus. Do you know what its fatality rate is?"
Xiyan and the others looked at each other. They knew about this virus, but they didn't know the fatality rate.
But everyone knows one thing: smallpox is very dangerous and highly contagious. Qian Rui knew that the Inca Empire in America was destroyed by the smallpox virus.
"The fatality rate of the smallpox virus is 30%, which means that 30 out of 100 people will die from the smallpox virus." Ling Xiao said.
"This means that in the absence of a vaccine, if the immune system is only allowed to work, 70% of people will survive, and even if they are alive, their faces will often be pockmarked."
When Ling Xiao said this, he paused and looked at the others to see if they understood. The others nodded. The ceiling decoration was very scary.
"As for the smallpox vaccine, I do know that the vaccine that prevents smallpox is cowpox, and smallpox has been eliminated," Qian Rui said.
"Yes, the WHO announced that smallpox has been eliminated. It is the only virus that has been eliminated. This generation has not received the cowpox vaccine."
"However, it seems that the so-called smallpox virus still exists, and there are still original strains in some laboratories." Xi Yan suddenly interjected.
"Obviously, there are several laboratories that still have specimens, but privately, who knows how many there are." Ling Xiao said in his heart.
This was her own guess, so she didn't say it out loud because there was no evidence.
"Why are there still specimens left? They should all be wiped out."
"If we don't keep it, how can we find the original virus if we need to study it?"
The three people's eyes widened, but they all agreed that the smallpox virus should be destroyed.
Ling Xiao said at this time: "The biggest question now is, can you say that these people's statements must be wrong?"
Life on earth sometimes needs diversity, and smallpox virus is also a part of life on earth. Wouldn't it be bad to remove it?
"There is no way to know right or wrong. Maybe only many years later, our descendants will know whether retaining the smallpox virus is good or bad." Ling Xiao sighed.
"But future generations cannot give warnings to modern humans from the future. Even if modern humans are warned, do we dare to believe it?" Ling Xiao asked.
"There was a scene in a science fiction movie where both the pros and cons sent robots to travel back in time and space to protect or kill the leaders of the Resistance Alliance in their childhood. As you, which side would you believe?"
After Ling Xiao's words came out, the three of them suddenly remembered that famous science fiction movie, which had been filmed for several episodes in a row, and the pig's trotters were even more famous.
"Xiao Xiao, are you talking about The Terminator? The leading actor has gone through a lot of ups and downs, filming one movie after another." Qian Rui finally said.
"When watching a movie, we as the audience have a God's perspective and know who is the real one? Who is the villain? We can choose a side."
"But when it came to whether to retain the smallpox virus, even if future envoys arrived, they also gave their opinions."
"The problem is that we don't know whether the envoy is for the right or the wrong side, so how should we deal with it?"
When Ling Xiao said this, he shrugged his shoulders, really unable to decide.
in every choice you make.
No one can guarantee that it is correct.
And human beings can only cross the river by feeling the stones when making decisions again and again.
Maybe it succeeds, maybe it fails, and humans must bear the consequences of the right or wrong choice.
Even sometimes, the path chosen may have proven correct at first, but it turns out many years later that it was not correct at all.
Or maybe a path that initially felt like a wrong path turned out to be the right path to take.
The others also remained silent after hearing Ling Xiao's words, not knowing what to do?