General, Research, Technology

What happens in the body when a coronavirus attacks it?

The new coronavirus COVID-19 has been little studied. And although scientists from all over the world undertook to study it, they still need time. Today there is a search for a vaccine that could stop the spread of the virus, new tests are being created with increased efficiency, doctors are studying the consequences after recovery, and so on. You and I can only watch this process and wait for good news. However, the enemy must be known in person. In today's article, I will tell you what happens to our body on the fingers when the coronavirus enters it. We will go through all the stages and understand: how it works and what our body can counter it.

What happens to our body when a coronavirus enters it?

This article is based on statements by physicians andresearchers who are currently studying the new coronavirus. And although in some cases the course of the disease can occur individually, the main symptoms and stages of the disease occur in a similar way.

How does coronavirus infection occur?

Everything is pretty simple. The virus enters our body through the mucous membrane of the nose, eyes or mouth. Our body is designed so that a person, on average, touches his face more than 20 times per hour. We scratch your nose, eyes, ears, straighten your hair, etc. If the virus is on the hands, then when it comes in contact with the mucosa, it quickly enters the body and reaches the back of the throat. We can also inhale the virus if someone near us sneezed or coughed.

Initially, the virus is fixed in the larynx, and then descends into the bronchi and lungs

Due to its structure (spikes in the shape of a crown) itfirmly attached to the cell membrane and literally "bites" into it, forcing to create copies of itself. Thus, the virus is gaining strength in order to continue its “journey” through our body.

Incubation period on average, it is about 5 days (the time after which a person begins to feel the symptoms of the disease). There are cases when the first symptoms began to appear only after 2-3 weeks.

The first symptoms are considered dry cough. So the body responds to irritation of cells attacked by the virus.

What happens to the lungs during coronavirus?

Continuing to multiply, the coronavirus dropslower in the bronchi and lungs and attaches to two types of cells: some produce mucus (goblet cells), others participate in the movement of this mucus and trigger an immune response to the appearance of dust particles, pollen, germs and viruses (ciliated cells). At this point, the human immune system begins to fight the virus. For us, this is manifested by fever, inflammation, general weakness, etc.

If our immunity is strong enough and inIf the body does not have severe chronic diseases, then in about a week the virus will be defeated, and we will receive immunity from it. True, scientists recently recorded cases of reinfection, but they are single and, possibly, caused by the fact that the patient did not fully recover or became infected with a new strain (a type of virus).

Scientists have calculated the scale of the tragedy of coronavirus infection if countries did not start quarantine and isolation.

But if something went wrong (such casesminority), then our immune system begins to react too actively. Why is this happening doctors do not know yet. If you do not go into medical terms, then our immunity gives too powerful a response to the virus and as a result affects not only it, but also healthy cells of the body (this process is called cytokine release syndrome) In general, a young and healthy body is able to cope with this, which can not be said about the elderly or weakened. Complications from this process can be fatal.

IMPORTANT: Youth is not a sign of a healthy body. If you lead an unhealthy lifestyle: smoke, drink, use drugs, then your immunity is weakened and you are at risk. Coronavirus can handle only our immunityremember this.

At this stage, patients have shortness of breath. This is due to the fact that it is increasingly difficult for oxygen to enter our body through the mucous layer. Pulmonary alveoli are filled with fluid and pus. Breathing is difficult up to the point that mechanical ventilation may be required. In the most severe cases, the patient is connected to ECMO. This is a device that pumps blood through an artificial lung and saturates it with oxygen.

In more detail about what mechanical ventilation and ECMO are, and how they differ read in our material.

Coronavirus Complications

Perhaps the most dangerous complication is acute respiratory distress syndrome. With it, the amount of fluid thatit accumulates in the lungs such that the body ceases to receive enough oxygen and dies. Lack of oxygen can also lead to kidney failure, which purifies the blood or destruction of the intestinal mucosa.

Another cause of death is an overreaction of the immune system that can harm the entire body (overreaction of the immune system) There may also be septic shock in which blood pressure drops so much that the organs of a person begin to fail.

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You must understand that if the immune systemif it ceases to cope with the virus, then it weakens so much that it is not able to withstand other human infectious diseases. That is why chronic diseases become a frequent cause of death from coronavirus regardless of the patient's age.

Today there is no cure for coronavirus. All doctors can do is fight and alleviate the symptoms caused by the disease. The best way to protect yourself and your loved ones is stay indoors.