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J&J says second dose of COVID vaccine boosts protection
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J&J says second dose of COVID vaccine boosts protection

Credit: Pixabay/CC0 Public Domain Johnson & Johnson said Wednesday a second dose of its COVID-19 vaccine boosted immunity beyond the first dose. In two clinical studies that have not yet been peer-reviewed, the additional shot evoked a nine-fold increase in antibodies to the coronavirus, the company said in a news release.  President Joe Biden’s administration has announced plans for...