Earlier quoted context omitted.
I am so confused about this. The linked Lancet study seems to make the opposite claim, as far as I can tell. Furthermore, the Lancet study seems to be specifically focused on COVID vaccine effectiveness against COVID-19, whereas the quote makes it sound like the study showed a general decrease in immune function among the vaccinated. Am I missing something here, or is Kenji Yamamoto's paper completely fraudulent?
Look at figure 2 in the Lancet study. Seems to be making that claim indeed. As for immune function, the phrasing isn't as precise as it could be but he's paraphrasing a cited study so does it have to be? There's lots of fraud in science but that word should be reserved for things that justify it, like made up data, misrepresenting your own data, motivated reasoning etc. Assuming the reader will understand what's mean…
This is an interesting area of study and I'm sure a different author would make a more persuasive case for/against this effect being real.