What is the worst thing in the epidemics?

What is the worst thing in the epidemics? 

What kind of person dies, because of COVID-19?

But the thing is that there are two ways to act when epidemics are starting. One is to put every people in the country to quarantine, and the second is just let this thing being, and let nature finish the job. So when we are looking at the records and statistics about the deaths, who were infected by the COVID-19, there is a couple of information, which would be interesting. And that kind of data is not public. 

What kind of person is typically dying because of COVID-19 infection? What was the reason, why the immune defense couldn't fight against that virus?

• Was the COVID-19 the cause of death, or did it just fastened that process?
• Or was the person just infected by that virus, but died for some other reasons?
• Did that infected person have some other diseases and infections like AIDS or Hepatite B?
• And did those infections cause death more often than if the infected person got only just COVID-19 alone?
• Did those people get things like cytostatic medical, or organ transplant? 
• What kind of lifestyle that person had? 

Worst what people can do in the case of epidemics is to believe that individual has immune resistance against those viruses. The thing is that because the virus is connecting its genome to the DNA of the cell, and that makes the cell to produce new viruses. The process is a little bit different in the case of RNA-virus, but the principle is always the same and in that process, new nucleoids would transform into the genome of the virus. And that causes the mutation, what is the common name for the transformation of the genome. 

When a virus connects new nucleoids to its genome that causes the changing of the viruses antigen. So this means that there is not a universal vaccine against viruses. The immune defense might not recognize the new virus, and that process is happening always in nature where that process is forming new viruses. This means that during the transformation process, the virus would turn to the new form, which can infect new cells and some people will get stronger symptoms than others, and this is the problem with COVID-19. 

The virus would not cause symptoms for every patient, and that thing makes the virus also dangerous. If a person would not have fewer of other symptoms, that individual would not probably go to the hospital, and that causes that the infected individual will start to infect other people. And one thing that might cause this kind of situation is that person believes being immune against that kind of virus.