What's the difference between bacterial infection and viral infection?

What's the difference between bacterial infection and viral infection? Both bacteria and viruses are pathogenic microorganisms, but their cell structures are different. Bacteria survive through cell division and colonization, while viruses have no cell walls and replicate themselves by the nucleus, which is highly contagious. Therefore, most viruses are contagious, while bacteria are not. So relatively speaking, virus replication is more difficult to kill than bacteria.

There are many kinds of bacteria and viruses, and there are also many strains of viruses. Bacterial infection is often distributed by individuals, and its spreading power is not as strong as that of viruses. Virus infection is highly contagious. The faster the virus replicates, the more contagious it is.

Symptoms: Bacterial infection can easily cause pyothorax, cellulitis, suppurative tonsillitis, suppurative appendicitis and other suppurative infections. However, viral infections, such as hepatitis B, measles and bacterial infections, do not fester, and their body temperature is relatively high, while viral infections are not necessarily, and some even do not have a fever. Bacterial infection mainly exists in brain, lung, intestine and deep tissues such as bone marrow and blood. Virus replication infection is mostly in blood, skin, gastrointestinal tract, breathing and so on.

In clinical tests, the difference is even greater. Bacterial infection is mainly caused by the increase of white blood cells, neutrophils, C-reactive protein and PCT. The more serious the infection is, the higher these indicators are. Bacteria can be found through bacterial culture medium, while viruses, usually eosinophils and lymphocytes, can be detected through serum.

In a word, bacterial infection and viral infection have different forms of existence in human body, so their pathogenicity is also different. Viruses and bacteria are microorganisms, which can only be seen under a microscope. But the two are completely different things. Viruses are different from bacteria, they have no cell structure, only protein and nucleic acid, and even only one of them has a very simple structure, which can be said to be the lowest-level organism, but its ability is not small, and human diseases are related to it from small colds to big cancers.

Bacteria are simple organisms composed of single cells or multiple cells. Like plants, they have cell walls, while human cells have no cell walls. This is the principle of many antibiotics sterilization, such as destroying their cell walls or preventing the synthesis of cell walls, and bacteria die, while people do not have this structure, so it has no effect on people.

In this way, you can first understand the general meaning and difference between bacteria and viruses, and then talk about their pathogenicity to human body.

People's colds are mostly caused by viruses, but in the middle and late stages of colds, they will continue to be infected by bacteria, that is, secondary bacterial infections. When a doctor sees a child, he usually gives you a blood test when he comes up. When you come back, he will tell you what the infection is.

Because the human body is infected with different things, there will be different reactions: virus infection will increase the number of lymphocytes; Bacterial infection will increase neutrophils; Chronic inflammation, monocytes will increase; When parasites infect, eosinophils will increase. It is through this result that doctors can judge what kind of infection you are, and then choose drugs according to the primary disease.

As long as there is no soil and environment suitable for viruses and bacteria to survive, everything will disappear quietly and naturally, and everything is the same, not just viruses and bacteria.