It tells us clearly that child cases are not slipping through the cracks.
If a child has cold like symptoms I don't see doctors using extremely limited tests on that child.
Did any expert anywhere identify a lack of testing as the reason for such a discrepancy between the infection numbers and the population makeup?
Is there any data to support your theory that a lack of testing in some of the most cared-for members of the population is the reason behind this huge discrepancy?
The CDC which I have already outlined previously. I am not sure why you keep going in circles.
"There have been very few reports of the clinical outcomes for children with COVID-19 to date. Limited reports from China suggest that children with confirmed COVID-19 may present with mild symptoms "
The CDC is calling out limited reports
POSSIBLY because of mild symptoms. Note I am not saying this is a fact, they are not saying this is a fact, they are saying this is a possibility (maybe a small one or a big one but they don't clarify to that level).
Its a lack of data points to get a clear picture on the virus impact regarding age demographics.
Again there was a severe lack of tests in China until much more recently. They were sending people home who had somewhat severe (in my book) symptoms.
Again I have been following this since January so there was tons of reports I just looked for the first news article I could find dating back to early February:
https://www.nytimes.com/2020/02/09/world/asia/china-coronavirus-tests.html
This calls out how they were sending home those with lesions on lungs, fever, and diarrhea without even testing them.
I am not saying children get more mild symptoms and go undetected. I am also not saying children do not get infected more often. I am simply pointing out the plausible response that we don't have enough information.
Another article outlining lack of information:
https://www.edweek.org/ew/articles/2020/03/11/children-and-coronavirus-4-questions-answered.html
Another about lack of data:
https://health.usnews.com/conditions/articles/how-does-the-coronavirus-affect-children-and-infants
Dr. John Swartzberg, clinical professor emeritus of infectious diseases and vaccinology at the University of California—Berkeley School of Public Health, adds a note of caution. Yes, he says, “the preliminary epidemiological data suggest that children don’t seem to get as sick as adults, but I want to emphasize that this is very preliminary data out of China.”
Swartzberg also stresses: “We don’t even know for certain that (children) are getting less disease. There are less than two months of data. We don’t know, in children and adults, how many are infected and don’t even have any symptoms. There could be a lot of us walking around with (what seems like) colds who have this, or they may be asymptomatic.” That, of course, would make the disease and death rates even lower than already thought.
The only thing most seem to agree on is that Children are at a decreased risk of death.