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Vaccine protection vs. omicron infection may drop to 30% but does cut severe disease

03:57
A woman is vaccinated against COVID-19 at a clinic in Johannesburg on Dec. 6. A new study from South Africa looks at the effectiveness of the Pfizer vaccine in preventing infection and severe disease. (AP)
A woman is vaccinated against COVID-19 at a clinic in Johannesburg on Dec. 6. A new study from South Africa looks at the effectiveness of the Pfizer vaccine in preventing infection and severe disease. (AP)

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