I imagine they haven't found a "marker" because they haven't looked for one. Also haven't found one for anything else

Healthy child takes vaccine / get myocarditis soon after / dies... / vaccine is known to cause myocarditis

It's not definitive, but it's probably a better explanation than the rest. Unless the virus or some other condition come forward and confess

My favorite being this one (report mandated under Biden and whose conclusion arrived under Biden):

"The final report will serve as a road map for Congress, the Executive Branch, and the private sector to prepare for and respond to future pandemics."

https://oversight.house.gov/release/final-report-covid-selec...

The main takeaway:

    - The virus possesses a biological characteristic that is not found in nature.

    - Data shows that all COVID-19 cases stem from a single introduction into humans. This runs contrary to previous pandemics where there were multiple spillover events.

    - Wuhan is home to China’s foremost SARS research lab, which has a history of conducting gain-of-function research at inadequate biosafety levels.

    - Wuhan Institute of Virology (WIV) researchers were sick with a COVID-like virus in the fall of 2019, months before COVID-19 was discovered at the wet market.

    - By nearly all measures of science, if there was evidence of a natural origin it would have already surfaced.

    - GAIN-OF-FUNCTION RESEARCH: A lab-related incident involving gain-of-function research is most likely the origin of COVID-19. Current government mechanisms for overseeing this dangerous gain-of-function research are incomplete, severely convoluted, and lack global applicability.

    - ECOHEALTH ALLIANCE INC. (ECOHEALTH): EcoHealth — under the leadership of Dr. Peter Daszak — used U.S. taxpayer dollars to facilitate dangerous gain-of-function research in Wuhan, China. After the Select Subcommittee released evidence of EcoHealth violating the terms of its National Institutes of Health (NIH) grant, the U.S. Department of Health and Human Services (HHS) commenced official debarment proceedings and suspended all funding to EcoHealth.

Note that an investigative journalist, very early on, showed the Peter Daszak link and explained how he was neck deep into this. But he got totally ignored. His article got ignored. And Peter Daszak was one of the expert consulted to determine if the virus had man-made origins or not. Now he's been debarred.

How interesting isn't it that the entire world coordinated non-stop hammering in mainstream media about the virus originating from a food market in Wuhan?

Why did the entire media, worldwide, presented the exact same narrative to everybody?

I'd like governments to mandate a report on that because we've been lied to for years.

And that no kids died due to Covid shots doesn't change the fact that the governements and the media lied to the people.