The journal Nature just released a review of where we’re at with vaccines. Four are in Stage 1 trials (that’s small numbers of people, tested for basic safety and tolerance of the dose before you ramp up to bigger trials).

There are also a bunch more in the pipeline.

Even if all goes well, the numbers I’m reading suggest you’re probably looking at 12-18 months for a vaccine to be ramped up to the millions of doses we’ll need.