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Omicron coronavirus variant seen as a clarion call to vaccinate the globe
While jabs and boosters are offered in the U.S. and much of Europe, vaccination rates remain low in southern Africa, where the Omicron variant was first detected.
Protection offered by booster shot beats 'natural immunity,' study suggests
In people who got a booster shot, levels of neutralizing antibodies exceeded the peak that followed two doses of COVID-19 vaccine.
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