**According to my medical study and what I remember and how I understand this, which is open for evaluation >
It's a coronavirus, in the same virus group as common colds. And they have not made a vaccine for the cold. And if it is possible to reinfect yourself with a cold . . . this could go for the COVID-19 virus, too. Even so - - the ones who can reinfect themselves might be better off, than the ones whose bodies lethally self-destruct in trying to annihilate the virus the first time they have it.
But, in general, I think antibodies can do down, after any disease; yet, the body still can remember a germ so it can more readily produce antibodies, the next time for the same germ.
Also . . . by the way . . . COVID-19 virus can mutate. And ones are concerned that a strain might mutate enough to make a vaccine out-of-date. One might not have a reinfection, truly, but gets a virus strain that has outdated the vaccine, or is another strain than the one which got to the person earlier.
But, in case the immune system can identify a germ which has been there and done that earlier, there can be a stronger reaction when the germ is back. And a too strong of an immune reaction can be, according to what I have read, the problem of COVID-19. It's not the germ but the reaction, that is the problem. I suppose a second infection might be more dangerous, then, since the second response of the body to a same creature can be much stronger.
So, by the way, then, I can see how they need to make a vaccine which prepares the body to react in a not self-destructive way . . . maybe by canceling out the virus before it gets into lung cells. Or else, if viruses are in cells, the immune system can go on overkill by annihilating lung cells which have virus in them. And if the virus is coming into the body through the lungs . . . can a vaccine get them detected before they get into cells, plus clear them out in time? If you see what I'm offering . . . and if I'm correct . . . the vaccine-making people have a job on their hands.
And we see how ones are saying, by the way, that a country can self-destruct in its effort to annihilate the virus. The poor little virus is only trying to clone viruses; all it does is use how the cell is already designed to function, using this to make cute new little virions. The problem can be how the body reacts . . . or how a country's culture reacts.
The immune system kills the cells which the virus is only using; and killing the lung cells can kill the person, and this is not helping the virus, at all. One infecting virus in a cell can get the cell to make tens of thousands of virions . . . per virus, I understand, which enters a cell. So, the virus is not cutting down a cell's ability to function, I suppose.
But the body says no, and kills that infected cell; and with this reacting the lungs can become lethally damaged. And . . . like this . . . a country can destroy itself in the process of fighting COVID-19.
There are people who already have not learned how to take care of themselves, during easier things. And it seems ones can be very busy with fighting and spitting at and blaming others, instead of finding out what they can do.
Now I just looked up the total for the United States > roughly ten million cases for America's three hundred million people. That's one in thirty people, I guess, for the whole occasion. For a lot of people that's pretty decent odds, though not for the one in the thirty. But I suppose if we just follow directions . . . wash hands, and keep safe . . . this can give us more than just odds in our favor. But it appears to me how a lot of people are just incapable of following directions, because they have been so disciplined to do all they can to control things for what they want. They do not know how to function outside their focus.
They want their liberty and happiness, but they need to take care of life, first, I would say.