‘A huge experiment’: How the world made so much progress on a Covid-19 vaccine so fast
Never before have prospective vaccines for a pathogen entered final-stage clinical trials as rapidly as candidates for Covid-19.
Just six months ago, when the death toll from the coronavirus stood at one and neither it nor the disease it caused had a name, a team of Chinese scientists uploaded its genetic sequence to a public site. That kicked off the record-breaking rush to develop vaccines — the salve that experts say could ultimately quell the pandemic.
