Recently I discovered a paper written by the CDC itself (which is about as official as it gets):
"During this same time period VAERS averaged around 6,000 foreign source reports annually. Vaccine manufacturers, which accounted for >99% of foreign source reporting, are required by law to submit foreign source adverse event reports that are both serious and unexpected [21], but not other types of foreign source reports. Given the vaccine manufacturer reporting requirements and the minimal amount of direct public reporting, it is not surprising that a relatively high percentage (48%) of foreign source reports are classified as serious. This likely represents selective reporting based on regulatory requirements rather than any substantial differences in safety profiles of foreign vaccines."
While every foreign country only reported "serious and unexpected" cases as per the CDC guidelines, I think Austria was an exception. I wrote an article about it:
Recently I discovered a paper written by the CDC itself (which is about as official as it gets):
"During this same time period VAERS averaged around 6,000 foreign source reports annually. Vaccine manufacturers, which accounted for >99% of foreign source reporting, are required by law to submit foreign source adverse event reports that are both serious and unexpected [21], but not other types of foreign source reports. Given the vaccine manufacturer reporting requirements and the minimal amount of direct public reporting, it is not surprising that a relatively high percentage (48%) of foreign source reports are classified as serious. This likely represents selective reporting based on regulatory requirements rather than any substantial differences in safety profiles of foreign vaccines."
https://pubmed.ncbi.nlm.nih.gov/26209838/
While every foreign country only reported "serious and unexpected" cases as per the CDC guidelines, I think Austria was an exception. I wrote an article about it:
https://vaccinedatascience.substack.com/p/why-does-austria-have-an-anomalously
But we can just ignore reports from Austria for this particular discussion, and what you have written here will be true for all the rest anyway.