FILE PHOTO: A woman holds a small bottle labeled with a "Vaccine COVID-19" sticker and a medical syringe in this illustration taken April 10, 2020. REUTERS/Dado Ruvic/Illustration/File Photo
(Reuters) - Around the world, politicians, drugmakers and regulators offer 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 A VACCINE WORKS?
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