The main puzzle is why children, so far, has been spared

[question everything]

One theory is that their lungs have not yet been scarred buy pollution, high blood pressure, diabetes..

[Aquaria]

1. This is also the first generation

Not to have daily or widespread exposure to tobacco smoke.

But the cleaner lung hypothesis is still only that—a hypothesis. For now.

We may have been lucky that kids have managed to avoid deleterious effects from the virus, thus far.

One factor might be that parents are more likely to take their kids to a doctor over a high fever right away and follow through with a treatment plan than they’ll do for themselves. Getting some kind of treatment in the early stages may be the key to pulling through.

[SCantiGOP]

2. Everything I have read

both the apparent lack of infection and serious side effects in children, and the extremely high mortality rate among older people, is all tied to their immune systems. Children before puberty are still strengthening their immune systems which run at a high rate all the time.
Once you hit about 50 years old, your immune system starts to decline.

This all reminds me of a comment a professor made in a college biology course. She said to keep in mind that thousands of years of evolution had designed us to live only until we were in our late 30s. By then, women were not bearing children and men were probably too broken down by injury and disease to be helpful to the tribe as hunters. A non-productive person in a small group that has a daily struggle to get enough to eat and survive is a liability, so life after 40 was not a trait that was adapted by natural selection.

[abqtommy]

3. This COVID-19 has this feature of sparing the children especially, and those under 50 as a

feature. I've wondered if the resistance of children has been increased by the fact that most children
get a regular treatment of vaccinations... That's just something I've thought about and have no other proof for.

[question everything]

4. They are talking about newborns

Here is a nice summary

https://www.nbcnews.com/health/health-news/we-simply-do-not-understand-why-coronavirus-sparing-children-puzzling-n1147951

[abqtommy]

5. I wrote my original reply using what information I've already gathered about COVID-19

mortality, especially this chart based on age...

https://www.democraticunderground.com/100213014772

There you'll see that age group 0-9 shows zero fatalities... Thanks for your input.