The virus is also peculiar in that we simply don't know how it works. It's one of those things where the real—and responsible—experts tell you that they don't know for sure, as there are still huge gaps between how we expect the virus to behave, and what we're witnessing among the patients on the ground.
One of the most concerning parts of the pandemic is the disproportionately high rate of fatalities among the elderly. This allows the virus to spread virtually undetected among younger, less vulnerable parts of the population. You may think that's a good thing, but it's not. SARS Cov-2 can lie undetected and spread far and wide, until it reaches the older hosts and wreaks havoc on them. If the symptoms were a bit more severe and detectable in their early stages, the virus would have had a far harder time reaching its older targets.That doesn't mean that the younger people are immune, though, as quite a few of them have died from the virus, too. It's something we don't yet completely comprehend, as according to our current understanding of the pandemic, relatively fit and younger folks should not be developing the more serious symptoms. It's a big part of the larger question of how the virus affects different people in so many different ways, and answering it is crucial to preventing future, potentially-deadlier outbreaks.