In an article in the prestigious medical journal in The Lancet, the infection protection expert refers, among other things, to Swedish studies that show that a significant proportion of those infected did not know or were uncertain whether they had been infected.

It has led Johan Giesecke to conclude that everyone in the world will eventually be exposed to the virus, no matter what measures are taken.

- Yes, I think so. But the vast majority will not notice at all, says Johan Giesecke when SVT News meets him.

You should not be worried now?

- No, you should not.

Are you worried yourself?

- No I am not.

Natural immunity provides better protection than vaccines

Johan Giesecke also says it is not certain that a vaccine will be particularly effective.

- Right now we do not know if you become immune after this disease, if the immunity is sufficient and how long it lasts. But in all diseases it is better to have had the disease than the vaccine. The infection gives a more complete immunity than the vaccine.

- If now the natural immunity is semi-poor, you should not expect that the vaccine will be much better.

Johan Giesecke refers to the flu vaccine, which has a protective effect of about 50 percent.

"Most people do not get any symptoms"

At the same time, there are currently no completed studies, which means that, like so much else around the new corona virus, it boils down to more or less well-founded guesses.

- There is a lot of discussion. If you get really sick maybe you get a good immunity? Do you get immune if you just have a sore throat? Nobody knows that.

Don't you risk swinging a little wild because there are no studies?

- No, why? I'm just saying that because the natural immunity may be poor, it may not be safe for the vaccine effect. What I am saying is that you should not expect us to get a good vaccine in three months.

Some may become scared when they read this, what do you tell them?

- That most people do not get any symptoms at all so it does not matter that much. There may be medicines that are good and then you can continue to research for even better vaccines.