Johnson & Johnson starts phase 3 trial of vaccine; could be available for use by early 2021

Johnson & Johnson starts phase 3 trial of vaccine; could be available for use by early 2021

US drugmaker Johnson & Johnson says the vaccine could be available for use by early 2021 if proven safe, effective. In the next phase J&J will enroll up to 60,000 volunteers across three continents and study safety and efficacy of a single vaccine dose.

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