Why has the virus not been eliminated in human history? What is the origin of the virus?
virus is a non-cellular organism with a small individual, simple structure, containing only one nucleic acid (DNA or RNA), which must parasitize in living cells and proliferate in replication.
As we all know, "virus" has always been one of the threats to people's lives and health. For a long time, its existence has always brought great trouble to people. Even today, with relatively advanced medical technology, people still cannot find effective ways to completely eliminate it.
From the Black Death that ravaged Europe in the Middle Ages to the Spanish flu that killed hundreds of millions of people, from the perspective of science and medicine, the history of human survival and development is the history of fighting against various viruses again and again. But unfortunately, although humans are lucky enough to escape from the clutches of the virus every time and reproduce to this day, they have almost never truly defeated the virus completely and put the virus to death.
There is a saying that humans cannot completely eliminate viruses. As one of the smallest organisms on the earth, they cannot be considered complete cells themselves, but they can penetrate into the human body through various means.
Strictly speaking, viruses are not actually considered living organisms. According to relevant research, viruses only carry genetic material and some protein , so they can only survive with other biological cells , which is one of the reasons why they are difficult to eliminate.
In fact, humans have only been more than a hundred years since their real understanding and research on viruses, but they have existed for billions of years. Some of them can even be preserved in permafrost and are waiting for the opportunity to resurrect.
Among the more than 4,000 viruses found in the world, the most familiar one is the flu virus. A cold that lasts for half a month basically belongs to the viral cold . No special medicine can be found that can be treated so far, and they can only rely on their own immune system to continuously play a role.
In fact, humans are a symbiotic relationship with most viruses. Biologist Rao Yi recently wrote an article pointing out that the emergence of viruses is much earlier than that of humans. Humans don’t know many viruses, but viruses have long “seen” various animals. Before humans, viruses had seen and “treated” various animals. Existing viruses have many relationships with human coexistence, including pathogenicity, mutual benefit, and many wells do not interfere with river water. The human genome has many sequences of virus origin, which are not only likely to cause disease, but may also be one of the basis for human evolution of in animals/.
Medical researchers said that relying solely on our own immune system can actually not resist most viruses because their renewal and evolution speed is much faster than we imagined.
virus can be hidden in the immune system, and the system can only perform procedural apoptosis of the entire cell through special recognition methods. Only after degrading the genetic material in the virus can you win this battle of defense, but this method is not efficient and sometimes even suffers heavy losses.
virus belongs to a type of microorganism. Today, there are more than 5,000 viruses that people have scientifically recognized, but only more than 160 can cause illness. Even among all viruses that have been recognized by humans, most of them live in peace with humans.
Now scientific research shows that bat carries more than 4,000 viruses, including coronavirus , and bats have super strong ability to carry viruses. Bats will not directly transmit viruses to humans.
U.S. researchers found that there are about 380 trillion viruses living in each human body, which is 10 times the number of bacteria. Viruses are widely present in the skin, respiratory tract, blood, urine, joint fluid, breast milk and cerebrospinal fluid . In the past, people thought that the human central nervous system was a sterile and viral-free environment, but in fact, the central nervous system was also occupied by multiple viral groups to some extent. For example, some viruses (especially herpes virus ) can penetrate into cerebrospinal fluid.
A basic fact and rule at the scientific level is that most viruses cannot be eliminated by others. So far, the only virus that humans have eliminated is the smallpox virus, which has also exterminated the infectious disease smallpox.
Eradication of smallpox relies on the prevention of vaccine , because smallpox is a very stable virus, and the virus mutation has never occurred that causes the vaccine to fail. In addition, as long as humans are vaccinated with smallpox vaccine, they can play a preventive role.
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