Coronavirus vaccine research is proceeding at a rapid pace. But it’s unlikely that a vaccine will be available before Election Day in the US. | Chandan Khanna/AFP via Getty Images

The decision to wait for more evidence means it’s very unlikely a Covid-19 vaccine will see any form of approval before Election Day.

Food and Drug Administration officials on a key committee said Thursday they were not planning to make a decision about granting emergency approval for a Covid-19 vaccine just yet. This all but ends the chances of a vaccine getting the green light in the US before the November 3 presidential election, and likely over the next month.

The Vaccines and Related Biological Products Advisory Committee was convened to go over the early results of Covid-19 vaccine clinical trials, the benchmarks to approve a vaccine candidate, and how to maintain