scott2000 said:???
https://www.theguardian.com/world/2020/dec/11/australia-terminates-university-of-queensland-vaccine-deal-with-csl-after-false-positives-for-hiv
"Trial participants were advised of the possibility that vaccine-induced HIV antibodies might be detected as a result, but it was nonetheless unexpected. Subsequent HIV tests provided definitive negative results in the trial participants.
While the HIV tests were false positives and there was no risk to the trial participants, significant changes would need to be made to well-established HIV testing procedures to accommodate rollout of this vaccine, the researchers said. The Phase 1 trial will continue, where further analysis of the data will show how long the antibodies persist."
I read about this, UQ is my alma mater. All because of a protein structure (from HIV) that was used to improve recognition. One down I guess.