Post #14291

tself, it simply deceives the cell and forces it to become its own personal factory. This scheme has a lot of weak points, due to which we do not become infected with everything that flies in the air around us. Firstly, the virus needs a specific gateway receptor to penetrate the cell. Over millions of years of mutations, breakdowns and reassemblies, some viruses have acquired gaps, but they only work for specific cells. Therefore, even if a sick dog or cat sneezes on us, its viruses will still not pick up the master keys to our cells and nothing will happen. Secondly, even if the key and lock suddenly match, there will also be a surprise waiting inside the virus cell. Because of their maximum simplicity, they need specific environmental conditions: temperature, acidity, the presence of certain substances. Even in the same organism, these indicators differ among different cells, let alone cells of different types. And if there are no suitable conditions, then the infection will simply collapse and go out, as if nothing had happened. But once a year the stick shoots. Sometimes it happens that a virus that gets inside a cell mutates, breaks down and assembles incorrectly, but this is very fortunate for the virus. The chances of this happening are critically low, but at times viruses from animals can still “learn” to infect people and vice versa. This is how, for example, influenza viruses operate: swine, avian and human ones can periodically mutate and jump from one type to another. There are also coronaviruses, which, in addition to us, also affect camels, cats, minks and bats - remember the case in 2019. Smallpox and herpes viruses also sometimes change their host, each has its own specific methods of reproduction and infection, but there is a fact of a change of host. Well, the most important example is the rabies virus. This killer doesn’t care at all about the type of animal; all mammals without vaccination are at risk. So it turns out that not all viruses can jump from a person to an animal and vice versa, you can hug sneezing dogs as much as you like. But there is also a certain and rather small group of viruses that live on several hosts at once - however, they have been studiedWe know that for many there are vaccines and treatments have been developed. Author: Arina Taran Editor: Elizaveta Isaeva 🏀 Hit the hoop and get an NFT gift — https://t.me/BasketbolX_bot