Three of four studies of people with long Covid who were subsequently vaccinated showed more people experienced an improvement than a worsening of symptoms. Is that a valid and accurate assessment? What can you tell us about the mechanism?

These findings were valid and meaningful because the issue of having long Covid is due to more than one cause. About half of patients are suffering a chronic continued infection from presence of the virus in their system because the immune system was not able to clear it, and those holdouts, finding inner reservoir within the tissues, continue to rumble and take a toll on the body. A vaccination causes a significant ramp up of the immune system yet again in response to the spike protein produced, and that surge of immune recognition, and the heightened immunity, may be powerful enough to reach and eradicate the hidden reservoir of virus, and that will resolve the problem. It will certainly reduce symptoms significantly from the cleanout. Without an understanding of this dynamic it is not immediately obvious why vaccination would be helpful, as it is an insult to the body much like the virus, and that, mechanistically, is why it has value, because it tweaks the immune system to ramp up and confer greater immunity without introducing a live virus that could take up residence and become a chronic problem or, through replication, overwhelm the body and kill the patient.