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J&J says second shot boosts protection for moderate-severe COVID-19 to 94%

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By Julie Steenhuysen CHICAGO (Reuters) – Johnson & Johnson said Tuesday a second shot of its COVID-19 vaccine given about two months after the first increased its effectiveness to 94% in the United States against moderate to severe forms of the disease. That compares to 70% protection with a single dose. The data will help J&J make its case to U.S. regulators for a booster shot even as the company stresses the durability of its single-shot vaccine as a tool to ease the global pandemic. President Joe Biden is pushing for booster shots in the face of surging hospitalizations caused by the Delta …

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