7.89 billion shots apparently, that's not going to divide into 300 batches is it? That would be about 25m vials per batch, even if we were to reduce that by 10x to make it more applicable to the US only that's 2.5m vials per batch, batches are not 2.5m in number. Something has gone wrong with the numbering or was fixed, either way 300 batches isn't going to be accurate simply by handling the numbers involved roughly.
The 600 trillion gorillion vials were contained in 300 batches? Really?
https://www.bloomberg.com/graphics/covid-vaccine-tracker-global-distribution/
7.89 billion shots apparently, that's not going to divide into 300 batches is it? That would be about 25m vials per batch, even if we were to reduce that by 10x to make it more applicable to the US only that's 2.5m vials per batch, batches are not 2.5m in number. Something has gone wrong with the numbering or was fixed, either way 300 batches isn't going to be accurate simply by handling the numbers involved roughly.
The 7.89 billion shots are worldwide, whereas the US is only 454 million (according to the article you referenced).
VAERS only covers the US (and only 1% to 10% of cases, by most estimates).
Therefore, the (roughly) 300 unique batch numbers that show up in the VAERS database covers between 4.5 million to 45 million shots.
That works out to a batch size of between 15,000 and 150,000 doses.
At the (false) number of 40,000 batches that exist in VAERS, that would mean each batch is between 112 and 1125 doses.
Does that sound reasonable?