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Studies suggest AstraZeneca COVID-19 vaccine safe, 70 per cent effective

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FILE - This July 18, 2020, file photo shows the AstraZeneca offices and the corporate logo in Cambridge, England. New results released Tuesday, Dec. 8, on a possible COVID-19 vaccine from Oxford University and drugmaker AstraZeneca suggest it is safe and about 70% effective. (AP Photo/Alastair Grant, File)

New results on a possible COVID-19 vaccine from Oxford University and drugmaker AstraZeneca suggest it is safe and about 70 per cent effective.

Some experts say that shows it is likely to win approval.

But questions remain about how well it may help protect those over 55.

That’s 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.

Partial results were published Tuesday by the medical journal Lancet.

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