The company saw a “substantial increase” in immune response when booster of its COVID-19 vaccine was given six months after the first shot.
Johnson & Johnson on Tuesday said its seeking emergency authorization for a booster dose of its COVID-19 vaccine from the US Food and Drug Administration.
“Our clinical program has found that a booster of our COVID-19 vaccine increases levels of protection for those who have received our single-shot vaccine to 94 percent,” said Dr. Mathai Mammen, global head of research and development at Johnson & Johnson, in a release. “At the same time, we continue to recognize that a single-shot COVID-19 vaccine that provides strong and long-lasting protection remains a crucial component to vaccinating the global population.”
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