Coronavirus immunity: Can you catch it twice? Why do some people suffer the disease worse than others? Will he come back every winter? Will the vaccine work? How will we fight the virus in the long run?

The immune system is at the heart of the most important questions about coronavirus.

The problem is that we know very little.

How exactly do you become immune-protected to coronavirus?
Our immune system protects the body against infection and consists of two parts.

The first part is always ready for work and takes effect as soon as any foreign invader is detected in the body. It is known as an innate immune response and involves the release of chemicals that cause inflammation and activates white blood cells that can destroy infected cells.

But this system is not specific to coronavirus. It will not help you develop immunity to coronovirus.

Instead, you need an adaptive immune response. It includes cells that produce targeted antibodies that can adhere to the virus to stop it, and T cells that can attack only cells infected with the virus, called the cellular response.

This takes time - studies show that it takes about 10 days for antibodies to start to develop that can work with coronavirus cells. At this time, in patients with the coronovirus in the strongest form, immunity begins to develop.

Can people get infected twice?
There have been reports of people who appear to have contracted multiple coronavirus infections in a short time.

Some argue that people do get infected twice. Another thought is that the virus goes into sleep mode in the body before resuming its activity.

However, the scientific consensus is that testing is a pretty big problem when the patient incorrectly informs the doctor that he no longer has the symptoms of the virus.

None of the patients were intentionally re-infected with the virus to test immunity. But when conducting animal studies, a pair of individuals were indeed infected twice.

They were infected twice, once to create an immune response, and then a second time after three weeks. These very limited experiments showed that after such a quick re-infection, they no longer had symptoms.