The human immune system is a complex and sophisticated defense system whose main function is to recognize and eliminate invading pathogens.
Mucosal immunity was the first immune system to evolve in vertebrates, and it is the most important first line of defense.
The most important thing is to have a targeting effect on the virus, and the only targeting effect is the antibodies, the main antibodies are IgG and IgA, and the vaccine is administered to produce IgG. So for many years, the most effective against the virus is the vaccine, to reduce the replication of the virus, the most important thing is to block the virus from entering the cell.
To understand the immune system, we first look at the structure of the human body. First, the immune system in the human body is the most important defense system against the invasion of pathogenic bacteria.
As the previous discussion, we talked about the significance of the virus coexistence in post-epidemic era. Now, most people are concerned about the following issues. Will they suffer from sequelae after confirmed Covid-19? What will be the sequelae of COVID-19? How can they alleviate the pain caused by these sequelae?
The most common disease is Influenza, or so-called flu, an acute viral respiratory disease. There are Types A, B, C and D of Influenza viruses. Only two subtypes of Type A, H1N1 and H3N2 and two strains of Type B, B/Victoria, and B/Yamagata, which are highly contagious and spread rapidly will cause seasonal influenza. It tends to occur in spring and winter from November to March.
