There is always an ethical consideration with any vaccine produced, this is the first time they disrupted a trial on the faux "ethics", people trialing for HIV drugs were never "ethically" considered.
So, bottom line the ethics faux was because:
"We don't know how long protections lasts," he says. "We don't know efficacy against variants — for which we definitely need a good control arm — and we also don't know if there are any differences in any of these parameters by age or race or infirmity."
Far from ethical the dump was un-ethical and self serving.