So, even with no new cases, the new uncovered cases will be app. the same each new day and will be at the maximum. In reality, people are tested with the PCR tests that remain positive only 10-28 days after the onset of the symptoms (even less days in asymptomatic and mildly symptomatic infections), Therefore, as more and more tested people have no more detectable viral RNA, and less and less newly infected people are discovered, the curve adopts more derivative shape with the broad peak where the inflection in the first imagined curve was (it is broad because of the convolution with the step function of the PCR-positive time window).

This decrease in the rise rate and the plateauing of the first imaginary curve, or the drop of the second, real, curve merely reflects the temporary halt of the transmission due to warm and sunny weather and the natural seasonal increase of the host non-specific immunity in the late spring. In most countries, the same chain of events will happen over and over again until either collective immunity, natural or through vaccination is achieved, or until the virus loses its capability to infect human hosts efficiently. Some scientists say that it mutates towards the less pathological forms.

If that is true, Sweden might come as a rescue to other countries. Namely, the mutations in Sweden should occur faster because many more viral reproductions are occurring than in other places in Europe. The virus might become benign in Sweden halfway through the next season. Opening the boarders to Sweden would then introduce such benign strains into other countries, preventing the third wave, or causing regular seasons of a mild manageable disease. Sweden might be doing other countries a big favor.

Thank you Mikael for the information. And you are right about suggesting that adding regional comparisons would lend even more understanding.
All the best
Helene