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AstraZeneca coronavirus vaccine safe, 70% effective, study suggests

5 years 9 months ago
New results on a possible COVID-19 vaccine from Oxford University and AstraZeneca suggest it is safe and about 70% effective, but questions remain about how well it may help protect those over 55 — a key concern for a vaccine that health officials hope to rely on around the world because of its low cost, availability and ease of use.
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15 minutes 23 seconds ago
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