Should it be feared that immunity to Covid-19 does not last?

The decrease in antibodies in the blood is not an indication that your immune system is not resistant to the corona virus, or it is not a sign that we cannot develop vaccines for disease prevention.
Over the past several months, a lot of scientific studies – with or without review – have shown that the antibody response of people infected with SARS-Cov 2 has decreased dramatically within 2 months. The press reports have raised fears that the immunity of patients infected with Covid-19 will disappear rapidly – which leaves us in a loss of hope of developing an effective vaccine and Castle.
But we believe that the above concerns may be confusing and inaccurate. Our body’s natural immunity and immunity acquired through vaccination both play a role in inhibiting the virus, but the two ways this immunity works is not exactly the same. The findings that the naturally occurring antibodies in Covid-19 patients do not have much implications for the effectiveness of the vaccine being developed. Science, in this case, can be more effective than nature.
The human immune system has evolved to serve two functions: expediency and precision. Therefore, we have two types of immunity: natural immunity (which can be effective against infectious diseases within a few hours, or minutes) and adaptive immunity (which can work in a few days. , some week). Most cells in the human body can detect a viral infection, and at that point they will call in the white blood cells to induce a protective response against the pathogen. When the innate immune response is successful in controlling the pathogen, the infection is quickly over, and there is little or no clinical symptoms. In the event of a prolonged infection, the adaptive immune system is activated to produce a protective response.
The adaptive immune system consists of two types of white blood cells, T cells and B cells, which are capable of detecting viruses in detail down to their molecules, and based on that index, to induce protective responses against that virus. A virus can cause disease by entering the human body, and using the cellular genetic engine to reproduce the virus itself, and multiply: they turn the human body into a real factory. virus output. T cells can detect and kill virus-infected cells. B cells can form antibodies, a type of protein molecule that can attach to virus subunits and prevent them from entering human cells; This prevents viral replication and stops infection pathways.
The human body then stores T and B cells that can help get rid of the infection if it is necessary to mobilize them in the future if the body encounters the virus again. It is these memory cells that are key elements of the long-term immune system. The antibodies produced when the body is infected with the regular seasonal corona virus annually maintain for about 1 year, but the antibodies to m