efficacy rate - USA Herald

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AztraZeneca-Oxford University covid-19 vaccine

Health

AstraZeneca-Oxford COVID-19 vaccine highly effective in preventing the disease

Marivic Cabural Summers -

November 23, 2020

COVID-19 vaccine booster shots

Business

Moderna says its COVID-19 vaccine candidate is 94.5 percent effective

Marivic Cabural Summers -

November 16, 2020

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