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How is Johnson & Johnson vaccine different from other coronavirus vaccines?

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US Food and Drug Administration has authorized the use of the Johnson & Johnson coronavirus vaccine in adults. Maureen Ferran, a virologist at the Rochester Institute of Technology, explains how this third authorized vaccine works and explores the differences between it and the Moderna and Pfizer–BioNTech vaccines that are already in use.1.

How does the Johnson & Johnson vaccine work?The Johnson & Johnson vaccine is what’s called a viral vector vaccine.To create this vaccine, the Johnson & Johnson team took a harmless adenovirus – the viral vector – and replaced a small piece of its genetic instructions with coronavirus genes for the SARS-CoV-2 spike protein.After this modified adenovirus is injected into someone’s arm, it enters the.

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