People are immune, why do they invade longer than the virus?

The problem is big and complex. To put it simply, people's immune function will also have high and low times, just like people have sleep, the climate has four seasons, and the immune function also needs to rest and adjust, and sometimes it is destroyed. As a result, it may be invaded by the virus, and once it does, it is possible to further reduce the immune function, resulting in long-term residence of the virus.

Otherwise, the virus will be removed.

Immunity refers to the fight against the occurrence of multiple diseases. The sum of the body's recognition of itself and the other, causing an immune response, and producing biological effects in the process of response is called immunity. It is a physiological function to maintain the stability of the body's internal environment, not just to destroy the virus.

Charles Darwin once said "survival of the fittest". People are immune, so that they can survive in such a dangerous environment and not become extinct. In the same way, in order for the virus to survive and not become extinct, it develops drug resistance or strengthens the ability of resistance bodies.

For example, gonorrhoea produces a type of IgM that cleaves the immunoglobulin IgM produced by the body.

When the body releases immunoglobulin, those who are sensitive to it are killed, while those who are not sensitive survive and continue to replicate, so it is likely that the virus is resistant when it is reinfected. At this time, the body must also re-produce antibodies to fight it, so that the person can still be infected and invaded.

This is because these viruses are easily camouflaged so that the immune system cannot recognize them, so they are able to break through the immune defenses, and these viruses have a complex structure.

This is because these viruses have mutated, and the immune system itself is limited, and it is impossible to destroy all bacteria.

The main reason is that these viruses are so strong that even the body's immune system can't solve them.

Because the immune system does not recognize the new virus, this immune system is not a high-powered electron microscope.

There is simply no way to see the essence of all intruders at once. There are a lot of viruses that are human history.

On the first appearance of the virus our body's immune system.

I don't know such a new virus at all, and the number of viruses that enter the body at the beginning is relatively small, and the size is very small, and it will not cause some harm to the human body, so the immune system will not regard this virus as an enemy, let alone attack.

The immune system does not recognize new viruses

The immune system does not have the ability to recognize the new virus at all, and the new virus begins to replicate continuously after entering the human body, and when the virus replicates to a certain amount, these new viruses will harm normal cells in the body.

The virus has an incubation period after entering the human body

At this time, it is already late, because the human system consumes more energy, so there will be fever at this time.

and symptoms such as fatigue. These viruses often have an incubation period of 3 to 7 days, or even up to 14 days, and of course, there are viruses with a longer incubation period after they first invade the human body until they are finally recognized by the immune system. For example, the rabies virus.

It can be incubated in the human body for more than ten years, and the longer the incubation time, the slower the replication time of these viruses, and the weaker the immune system's ability to recognize these viruses.

Due to individual differences in the immune system, changes in the intake of these viruses, and differences in the strength of these virus strains, many people's immune systems will be killed by these viruses very quickly, and they will gradually recover without symptoms. Antibodies against the virus are also produced as the immune system fights the virus. The next time the human body encounters this virus, it will recognize them, and will use antibodies as the first to successfully strangle the virus that enters the human body in the cradle.

Mainly because when it first enters the human body, the immune system does not know at all, so there is no way to work. Then they will work only after they perceive that we humans are already sick.

Because after entering the human body, some of the cells inside will kill these viruses, and the immune system will not be activated.

Because there is no way to be sure that the other party is a virus at this time, the immune system will not attack something uncertain.

Because when the virus enters the human body, the immune system has not seen such a virus and does not know what to do, so there is no mechanism to take action.

According to the different immunization objects, the human immune system is divided into two categories: specific and non-specific. Among them, special immunity is aimed at endangering health or bacteria, it can cause hepatitis B virus antibodies and forest encephalitis, which is an artificial and effective supplement to the ultra-heterogeneous immune system, based on the mucous membranes of the respiratory tract, the mucus part of the pathogen, and forms nozzles and sputum on the pathogens of mucus secretions infected with dust in vitro; Another important barrier is the isolation of pathogenic pathways into the human body on the body; A person's gastrointestinal tract contains digestive substances such as stomach acid and intestinal fluids, as well as intestinal bacteria. These two barriers can play a role, but they are not omnipotent, people eating, drinking, and breathing will naturally continue to accept various dangers from the outside world, and when the danger exceeds a certain range of people to deal with the problem in time, it may be a pathogenic breakthrough barrier.

<> all living things have at least one form of protection that can help fight off disease-causing pathogens. This defense system evolved from a simpler defense mechanism, but scientists do not yet fully understand the evolution of the immune system. To determine the evolutionary pathways of the immune system in the spine, researchers studied the immune response of different organisms, studying immune system protein genes to gain information about the genetic origin of the immune system.

The human immune system has evolved along with the evolutionary history of human beings, a large part of which is innate, and a small part is acquired by specific immunizations, such as our routine vaccinations, globulins, etc.

Why have humans not evolved immunity to all viruses, because in a stable ecological space, all living things have evolved and adapted to the characteristics of living space, including human immunity, and if they do not adapt to it, they will be affected by history**. Biology in nature, including the ancestors of humans, has experienced countless disasters throughout history, including various plagues that occurred in nature, and survived the plagues to experience her immunity.

The recent outbreak of the new coronavirus in China can be described as ferocious, and the topic of the virus has also aroused heated discussions, and many people have lost their lives as a result. However, since our body has its own immune system that can defeat most viruses, today I will give you a brief introduction to how our body's immune system fights viruses.

First of all, when the virus invades the human body, it will enter the first line of defense of our human body, ** and mucous membranes, our human body** and mucous membranes have a certain resistance to bacteria, and some special structures in the body can also play a role in blocking microorganisms from entering the human body. The second line of defense is the phagocytic cells and the bactericidal substances in the body, interferon, etc., which can directly kill and engulf bacteria. Then there is the third line of defense of the human body, specific immunity, specific immunity can kill germs in a targeted manner, which is very efficient, and vaccines are made using this principle.

In fact, although the virus has great lethality and infectiousness, it will also be **, I hope that when the virus comes, everyone will not panic, and I wish everyone good health.

In the face of viral invasion, the immune cells of the human body will first play a role to prevent the virus from entering, and then will carry out humoral and cellular immunity to produce antibodies.

In the face of the invasion of the virus, the human body should gradually produce antibodies, and its own immune system will fight against the disease, which will cause various reactions. If it wins, the virus will subside.

The immune system binds to the virus with antibodies and is then engulfed by phagocytes. In addition, after the virus invades the cell, the immune cell will directly kill the host cell and destroy the virus host.

The body's greatest resistance to viruses and germs is through the enhancement of its own immunity, through sleep rest or drinking water to enhance its own immunity.

Although modern science and medicine have been fighting for 200 years, the history of mankind's struggle against viruses began at the dawn of mankind. After such a long struggle, human beings and viruses have adapted to both sides, and human beings can be immune to most viruses to a certain extent, and viruses have gradually become resistant to some drugs, making these viruses more difficult to eliminate, so if human beings want to truly immune to all viruses, it is far from enough to be just one or two hundred years, and it will take even longer.

While human beings are fighting against viruses, viruses are constantly mutating and evolving, and can evolve types that humans cannot be immune to, as long as viruses can mutate, human beings will never be immune to all viruses.

Because there are many types of viruses, and viruses are constantly mutating, humans are not immune to all viruses.

Because viruses are constantly mutating and evolving in the struggle against humans to gain a chance to survive, it is said that they are not immune to all viruses.

Because human technology is not yet powerful enough to defy the laws of biology. Viruses can be constantly updated, and people can only adapt to them, but they cannot defeat them directly.

The body's immune system is a defense network that covers the entire body. The first line of defense to protect the body is:**, mucous membranes and their secretions, cell membranes, respiratory tract, gastrointestinal tract, urethra and kidneys.

The second line of defense is: phagocytosis, antimicrobial proteins, and inflammatory responses. The third line of defense is mainly composed of immune organs (tonsils, lymph nodes, thymus, bone marrow, spleen, etc.) and immune cells (lymphocytes, phagocytic cells, etc.) with the help of blood circulation and lymphatic circulation.

However, the barrier and filtration mechanisms alone do not fully protect us, and the body relies on the blood cells and proteins that make up the immune system to act as a defense.

White blood cells patrol the blood vessels and carry out a series of defense and immunity work. For example, releasing antibodies and purifying the blood. The chemical nature of antibodies is protein, the full name of immunoglobulin, which circulates in the blood and tissues to strengthen the body's defenses, is the main component of cellular immunity, and also helps white blood cells play a role.

Lymphocytes are special cells that can remember how to protect the body, which are divided into T lymphocytes and B lymphocytes, in which each lymphocyte is divided into memory cells and effector cells, where the role of effector B cells is to produce immunoglobulins that play a role in humoral immunity, and the role of effector T cells is to bind to target cells and destroy it. The role of memory cells is to remember antigens and react quickly the next time they invade. Cellular immunity refers to the role played by white blood cells, while humoral immunity refers to the role played by antibodies.

The two systems work together to trigger each other's performance! The human immune system is complex on diet. Exercise and lifestyle are particularly sensitive.

Factors such as lack of sleep and the stress of daily life can weaken our immunity, and many natural foods** provide substances that boost and strengthen the immune activity of cells and body fluids. There are three main lines of defense in human immune function: first, ** and mucous membranes, and second, bactericidal substances and phagocytic cells in the body.

3. Immune organs and immune cell functions: 1. Protect and resist the invasion of antigens, prevent the occurrence of diseases and maintain the health of the human body 2. Remove senescent, dead and damaged cells in the human body in a timely manner 3. Repair the method of artificial immunity to identify and remove abnormal cells (such as tumor cells) generated in the human body at any time: inject vaccines in the body such as:

Vaccinations and other vaccinations are commonly used as artificial immunization. Note: The information comes from various web pages, thank you for their help!

I think the human immune system. It will only be in. When a virus invades. to be able to deduct work. Because of people. When there is an invasion of cold bacteria. It will give you a high fever. to defend against invading viruses.

The immune system not only works when viruses invade, but also when bacteria and other foreign substances are used, and as long as the immune system thinks that the foreign substances are unfamiliar (high immunity often attacks previously familiar substances as unfamiliar), it will mobilize inflammatory mediators in the body to attack. The immune system attacks not necessarily all substances that are harmful to the human body, and the immune system will also dutifully attack the harmless substances, such as the saliva proteins left in the human body when mosquitoes bite people and suck blood, which are not harmless to the human body, but the immune system still mobilizes the inflammatory mediators in the body to attack these saliva proteins, resulting in inflammatory reactions such as redness, swelling, packing, and itching.

With the ravages of the new coronavirus in China, many people are reminded of the Ebola virus that broke out on the other side of the world, in the Congo region of Africa. So who is more terrifying than the Ebola virus or the new coronavirus?

At present, according to the research of relevant scientists, the new coronavirus has a certain incubation period, but the Ebola virus is like a biochemical virus in the horror**, the incubation period is short, the death cycle is shorter, and the fatality rate is very high, so that many scientists are helpless, and it is also known as the virus with the highest risk level at present. The ravages of the new coronavirus in the country can prevent the development of the virus through isolation, but the Ebola virus is different.

On August 26, 1976, a teacher in the northern part of the Congo in Africa was judged to be infected with malaria because of a high fever, and after passing **, he developed symptoms of headache and diarrhea, and died two weeks later, and later more patients with the same symptoms went to the doctor, and was later identified as a contagious virus, that is, the Ebola virus, which was later shown to be a hemorrhagic fever virus after relevant research. The symptoms are also more obvious nausea, headache, blood, diarrhea, etc., although it is like an ordinary flu at the beginning, but after it worsens, it will be painful all over the body, and finally the seven orifices will bleed and die of organ failure.

The Ebola virus also has the highest fatality rate, with a fatality rate of about 50% to 90%, and like the novel coronavirus that is raging in China, it originates from some wild animals. With the new coronavirus becoming more and more powerful, many people are worried about whether the new coronavirus will develop like the Ebola virus in the future. Will the Ebola virus, this terrible virus, come to China from Africa?

The new coronavirus has a long incubation period, although it is cunning enough, but we can prevent the further spread of the virus by means of timed isolation, but although the fatality rate of the Ebola virus is relatively high, a person with the Ebola virus has been infected and died before leaving, so on the one hand, the short death cycle of Ebola also prevents the spread of the Ebola virus around the world.

We look back on the history of human beings on the earth for millions of years, from primitive societies to advanced civilizations, human beings stand out among all species and become advanced intelligent life forms, with higher technology, can use all natural resources on the earth, but they are still vulnerable in front of the natural interface, when the virus is raging, human beings can be easily defeated, it can easily take the lives of countless people, in fact, from another point of view, perhaps the virus is the immune system of nature, Humans' unbridled destruction and unrestrained consumption of wild animals triggers nature's immune system.