This is where we are at with a COVID-19 vaccine

The global race to develop a coronavirus vaccine is speeding up with Russia and China already approving experimental vaccine use in their populations

Around the world, politicians, drugmakers and regulators are offering contradictory outlooks on when a COVID-19 vaccine will be ready.

Much depends on what 'ready' means and for what group of people. Some key questions around the timeline are:

When will we know if a vaccine will work?

More than half a dozen drugmakers around the world are conducting advanced clinical trials, each with tens of thousands of participants.

Several expect to know if their COVID-19 vaccines work and are

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