ME/CFS Skeptic
Senior Member (Voting Rights)
Their main argument seems to be that so many patients with long covid have negative antibody tests.
- They refer for example to the survey by Hannah Davis and colleagues were more than 2000 respondents said to have had an antibody test (IgG, IgM, or both) but only 18.2% had positive results.
- In a different study, 77 long covid patients reported they had antibody tests but only 30 (39%) were positive.
- Thirdly they refer to this preprint on 1560 students where there was no difference in symptoms between the 188 (12%) that were seropositive and the 1365 (88%) that were seronegative for covid antibodies.