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Just as there is no omnipotent human being in the world, no virus spreads in any way that is omnipotent. For example, HIV, which is highly contagious, is mainly transmitted through sexual transmission, mother-to-child transmission and blood-borne transmission, while droplet transmission is not the way of transmission, because the intact respiratory mucosa and respiratory secretions will block the invasion of HIV. <>
The measles virus infected with measles can be said to be the most contagious virus, with a basic infection number of about 15. It is transmitted by contact and respiratory transmission, but it is not omnipotent, as it cannot be transmitted through blood. <>
Another example is the new coronavirus, which is threatening human health recently, and its transmission mode is mainly droplet transmission, contact transmission, and if there is a large number of new coronaviruses in the air, healthy people will be infected if they stay here for 15 seconds.
Until today, there have been more than 40,000 confirmed cases of new crown pneumonia in a short period of nearly two months, and they have been designated as Class B infectious diseases that need to be prevented and controlled according to the Law of the People's Republic of China on the Prevention and Treatment of Infectious Diseases. This is enough to prove that the new coronavirus is very transmissible. <>
Does this data show that the new pneumonia virus is omnipotent? Not really. Because the transmission mode of the virus also includes mother-to-child transmission, blood transmission, and sexual transmission, and whether the new pneumonia virus has several transmission routes has not been confirmed.
And the news that has been confirmed so far: the new pneumonia virus cannot be transmitted through ** contact, unless the skin is broken, otherwise simple ** contact will not be infected with the new pneumonia.
So there is no omnipotent virus in the world, and there will be no such virus. Imagine how terrifying the human world would be if such a virus really existed
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Today's novel coronavirus transmission method is quite omnipotent. Contact transmission, saliva transmission, and the most terrible thing is aerosol transmission, which is really difficult to prevent, so I hope everyone pays attention to the body.
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No, no matter how powerful the virus is, it has its own weaknesses, and there can be no omnipotent way of transmission, otherwise if it really exists, there is no need to study vaccines, it has already been occupied by the virus.
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According to the world's most authoritative scientific evidence, there is no omnipotence of the transmission of viruses.
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How to say this, this is not fixed, because the virus and humans are in the process of mutual evolution, so it is very likely that there will be new ways of transmission, not that there is a method that is omnipotent.
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I don't think there is a single way of transmission of the virus, after all, the virus can only survive in one way, and then it spreads and then creates a specific way of transmission.
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The virions are small and lack cellular structure, and plant viruses are mostly rod-shaped, linear and globular, and the rod-shaped chondria are generally 130 300 nm long and 15 20 nm wide. Genetic tissue contains a type of deoxyribonucleic acid (DNA) or ribonucleic acid (RNA), which relies on its own nucleic acids for replication and reproduction. Strictly parasitic intracellular obligate parasites.
The transmission modes of plant viruses are: (1) grafting transmission, which is transmitted through scion and rootstock with viruses. Some use dodder seeds as a bridge to spread the virus from diseased trees to healthy plants.
2) Insect transmission, most plant viruses are transmitted through aphids, leafhoppers, planthoppers, etc., such as peach aphids can transmit more than 100 kinds of viruses. (3) Soil transmission, which is transmitted through soil poisoning. (4) Mechanical transmission, the virus is transmitted by sap through micro-injuries caused by leaf friction between plants, such as mosaic virus.
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1. Seed propagation 2, insect propagation 3, manual operation of tools propagation, such as pruning, grafting, etc. 4, propagation of virus-containing explants through tissue culture.
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One is network propagation, including the Internet and local area network, and the other is mobile media propagation, such as U disk, mobile hard disk, etc.
The details are as follows: (1) Hard disk propagation: Because the hard disk with the virus is used locally or moved to other places, maintenance, etc., it is infected by the virus and spreads.
2) Disc disc: Most of the software is burned on the CD, due to the fact that ordinary users buy less genuine software, some illegal businessmen put the software on the CD, and burn the virus files on it in the process of copying.
3) U disk spread: U disk is easy to carry, in order to facilitate the transfer of files between computers, often use U disk, it will spread the virus of one computer to another.
4) Virus files on the network, in today's increasingly popular computer, people pass files and letters to each other through the computer network, so that the virus spreads faster, because of the sharing of resources, people often go online, free shareware, virus files are inevitably entrained, and the network is also the main way of modern virus transmission.
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Answer]: a, b, c
Network viruses are mainly transmitted through network server access, electronic mailing, and FTP file exchange, disk file sharing, and exchange.
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It mainly refers to a means of communication commonly used in network marketing in the Internet industry. For example, at the beginning of a **** today, the prize is a 4s, and you get a **number when you participate. At the same time, you can get one more **number if you invite friends to participate.,You can get one more **number on Weibo**This message...
and other means to spread this news through a number of people like you, in fact, it doesn't matter if there is a prize, the important thing is to make this ** well-known through everyone's communication, and this event allows more people to know inexplicably, and they are happy to invite their friends to participate. That's what goes viral.
**may be executed through a malicious ** virus, the general** file will not have a virus, but the rmvb file may have a bullet**, if that** there is a virus on it. >>>More
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How is the virus transmitted? This time, the principle is clear.
The transmission rate of the virus on the plane is still quite high, after all, the crowd is relatively dense, and if passengers sit down with protective measures, the probability of being infected will be greatly reduced, such as wearing masks, washing hands frequently, and trying not to touch other people's belongings.
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