Saturday/ the J & J vaccine: one and done

Late today, the Food & Drug Administration (FDA) granted emergency use authorization to Johnson & Johnson’s single-dose coronavirus vaccine.

The vaccine works a little different than the messenger-RNA vaccines of Pfizer-Biontech and Moderna. It uses a modified adenovirus as a wrapper for DNA material.

There are three approved vaccines in the US now. I added my notes to a slide that the Today Show from NBC showed on Friday.

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