About 1.5% of ME/CFS cases are triggered by vaccinations, according to one piece of research
from Dr Chia, and these are vaccines of many different types (although the hepatitis B vaccine seems to be more implicated than others, according to a patient survey
by Dr Charles Shepard).
So you would expect and anticipate that COVID vaccines are going to trigger some cases of ME/CFS. I don't think we are seeing anything new here.
What is interesting and new though is the fact that COVID vaccines given after the event seem to help long COVID patients improve, with greater improvements appearing from the mRNA vaccines (like Pfizer or Moderna) compared to adenovirus vaccines (like AstraZeneca and Johnson & Johnson). Ref: here
That suggests that the new EBV mRNA vaccine that Moderna is working on might help ME/CFS associated with EBV.
In terms of deaths following COVID vaccine, intriguingly a CDC survey
found that vaccinated people were 2 to 3 times less likely to die after the vaccine, compared to unvaccinated people
, and this was for all causes of death.
In the case of the Pfizer and Moderna vaccines, the data showed that vaccinated people were 3 times less likely to die, compared to the unvaccinated, af any cause of death; and in the case of the Johnson & Johnson vaccine, they were 2 times less likely to die.
This is intriguing, as these death statistics include any cause of death, including death from car accidents, death from falling off a ladder, etc. So people being vaccinated had much lower levels of death across the board, compared to the unvaccinated. It is thought this may be explained by the possibly that people who opt to get vaccines will tend to be the more careful and cautious types.