Too difficult: Viruses are the biggest threat to human domination, but are ecologically related, eliminated? Control?
A Nobel scientist once said: The greatest threat to humanity to rule the earth is a virus.
It seems that the general public is obsessed with the topic of "human beings will perish." Among the many "destruction theories", in addition to lack of resources and climate change, supporters of the virus theoryThere are also many.
When it comes to viruses, everyone seems to think unconsciously of the bad. It seems that viruses are the beginning of death and nightmares.
What is a virus? Let's take a look.
Virus, parasitic microorganisms that are not visible to the naked eye.
A virus is a simple structured microorganism. Generally speaking, it is a non-cellular organism with proteins enclosing genetic material. It has no life itself, and can only survive if it is parasitic in the host.
Once the virus enters the host, whether it is a human or an animal, it will take over the normal cellular mechanism to reproduce and continue to infect, which seems to be a nuisance.
The virus infects a very wide range of people, humans, animals, plants, and even bacteria! As for how powerful it is after infection, Xiaobian believes that as long as you live in modern society, you will know that lethality and infection are synonymous with viruses.
Virus, only exists around us? No, it's everywhere.
The world is big, viruses are everywhere, we can see how many of them, there are so many, there are 380 trillion viruses in the human body alone.
There was an experiment where 4 buckets were placed on the high mountains of the Sierra Nevada, Spain, in order to collect viruses falling from the sky. After statistics, it was found that an average of 800 million viruses per square meter of land fell from the sky every day.
Scientists believe that the virus is mainly transmitted to the air by water waves, so the geographical restrictions are very small for the virus. But some scientists believe that the origin of the virus may come from the atmosphere or even outer space.
How powerful is the virus?
Simply give a few examples, you can see at a glance.
The SARS incident that broke out in 2002 has a deep memory of Chinese people. From the outbreak to May 18, 2003, 4698 people were sick, 284 died, and 1529 recovered in the mainland. Due to insufficient understanding of the virus, the medical staff at the timeThe infection rate is over 20%.
Ebola virus is a very lethal virus with a mortality rate between 50% and 90%. It was first discovered in the Ebola River region in 1976, so it got its name. Until December 23, 2016,The World Health Organization has announced that a vaccine can effectively protect against the virus.In 2019, the vaccine produced in the United States was approved by the European Union and the World Health Organization, becoming the first Ebola vaccine approved.
These viruses have their own biosafety levels: AIDS level 3, SARS level 3, Ebola virus level 4, the higher the level, the more dangerous they are.
Obviously, there are many more horrible and deadly viruses.
The virus reproduces quickly and is prone to mutation.
Many people have found a rule that many viruses are not "born" against humans, but are transmitted from many animals.
Take SARS as an example. After investigation, in this virus disaster, civet plays a very important role.
Also our common rabies is also transmitted to humans from animals such as cats, dogs, bats, and raccoons. Why can the virus be infected across species?
This starts with mutations in the genetic material of the virus.
As we all know, because the virus does not have a complete cell structure, it relies entirely on host cells to reproduce, and the reproduction rate is even faster than the growth of cancer cells. The more times it is reproduced, the greater the probability of "error" and the probability of corresponding mutationsincrease.
Over time, viruses have mutated, increasing their likelihood of infecting multiple species. That is, some viruses can usually only infect humans or animals, but after their genetic material is mutated, it may"Evolved" the ability to infect both humans and animals.
Nevertheless, mutation is only a phenomenon, and it is not always harmful. We see so many species and a colorful world today, and mutation is of great help.
How do these viruses spread from animals to humans?
The most direct way is physical contact.
It is reported that the first swine flu case in North America occurred on the farmer; recently, Nipah virus has also been outbreaks in some South Asian countries. Studies have found that in these areas, most people are exposed to infected pigs directlyOr its contaminated tissues, which are infected with the virus.
Some viruses are transmitted by closer contact, such as rabies virus that may be transmitted by a bite, and HIV that is transmitted by blood.
It is worth mentioning that for us, many viruses come from the mouth.
Think of civet, and then think of those delicious fresh products, are the most direct way for viruses to invade the body.
Should we eliminate all viruses?
For pessimists, doomsday is inevitable, and viruses will be our greatest enemy.
Almost all "zombie" film and television works have been successful, it can be seen that people "recognize" this view, and the creators are constantly "selling anxiety" to the public, and have succeeded.
But there is one thing we tend to ignore: without viruses, we may not survive.
Scientists once filtered out some of the viruses in the seawater and found that in the seawater without viruses, plankton stopped growing. In other words, when the virus infects other microorganisms, it releases nutrients, which happen to beIs the "food" of other bacteria.
Viruses and virus-infected organisms are an integral part of the global ecosystem.
Humans can still be in this position today, and viruses are also vital.
Some studies suggest that there was an ancient virus that inserted genetic material into the genes of human ancestors. This "forced adaptation" of genetic material is part of our modern nervous system. Without them, human wisdom may not be soSuccess. Not only that, according to scientific statistics, 40-80% of genes in humans may be related to viruses.
So, for the virus, we ca n’t live without it, but also need to defeat it. It is really love and hate.
The confrontation between viruses and humans, who will laugh to the end, no one can know.
Perhaps the relationship between us should be to contain each other's development. The best way for viruses is to plan ahead.
The outbreak of the virus has repeatedly proved that the world needs to worry about more than just climate change.
At present, we are constantly creating a "good environment" for viruses, pollution, various radiation leaks, and bad living habits, and viruses are mutating at an unprecedented rate.
Humans do have wisdom, but before the emergence of the "super virus", it is very important to be able to control the deadly virus. It is difficult to say whether humans can win this race.
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