Sorry, but scientists do know as it's been studied intensely in Europe. Is it written in stone? No it hasn't because as you said, this is all new to all of us.
However even in the USA there have been few cases of kids catching this virus yet alone deaths or spread. Yes, they do happen, but not nearly to the extent that deaths take place to the elderly, the immunity compromised, or both.
If we have over 30 million children in school, and 1,000 get Covid, is that a good enough reason to stop the other 30 million from attending school?
I can dream up numbers as well as you can but I choose not to. The fact remains that they are still not quite sure all the ways that Covid 19 is transmitted. Has the People n Charge finally started calling an airborne delivery system yet? How about the time it can stay active when in the Oxygen rich Air by contact? How exactly is it transmitted from one to another? They don't know so they used the shotgun approach. For every argument you can come up, I can come up with one against it and vice versa.
As for children getting the disease, Children can get an offshoot that isn't as deadly but
How likely are kids to get Covid-19? Scientists see a ‘huge puzzle’ without easy answers Let's have the Mayo Clinic weigh in.
COVID-19 (coronavirus) in babies and children
Since the Mayo Clinic as access to China's studies, it's a safe bet that they have a good idea on what is going on. But they really don't. Covid 19's best way to keep from being spread is still the Shotgun approach. And if you read the link you will find Children to get it and can transmit it to adults.
Now a note from CDC very recently put out.
Limit time with people at highest risk of severe illness from COVID-19
The Countries that have opened the schools back up are where Covid 19 has been isolated. Or at least, they have isolated the Covid 19 recipients. And it hasn't infected others that way. They originally completely shut down their entire country, did a high degree of testing and isolated those that test positive for Covid 19. Other countries that have not completely isolated the Infected People (including children) won't be so lucky when the open up their schools. Or maybe they will. The only way to test that theory is to open up the schools and allow our Children to be part of the experiment.
If you read the Links (and those two are NOT Political in any way) you should come to the same conclusion I have. We just don't know. If you come up with a definitive Yes or No then there is something else clouding that decision.
Okay, so let's move forward. We don't know. We also don't know if or when a successful vaccine will be available. So what if it takes five years? Do we keep children home for five years? What about ten? What happens if like the flu, it's just something we have to deal with year after year? Do we close down schools from coast to coast? Then what?
Yes, they are even saying best case for a vaccine is 2021.
Also, virus vaccines aren't like bacterial vaccines. If you get a polo shot in time, you won't get polio.
A flu shot doesn't stop the flu. You're less likely to get it and you're likely to get it less severely if you do, but it doesn't stop the flu.
That we're going to wait at best 1-2 years for a partially effective vaccine is asinine.
Though all Daryl needs is to push the shutdown past November 3. That's the only important date to him and he wants Americans jailed in our homes to prevent a recovery. He's not fooling anyone