Not yet investigated
What we have so far
It erases existing antibody memory — 'immune amnesia' — so the damage outlasts the rash by years. R0 of 12 to 18.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.