Wafaa El-Sadr, MD, MPH, MPA weighs in on the postponement of vaccinating prison populations after a pause on the Johnson & Johnson vaccine.

In addition to being a single dose, the J&J vaccine “is easier to store than the two mRNA vaccines that require freezing,” said Dr. Wafaa El-Sadr, a professor of epidemiology and medicine at Columbia University. “That adds to the complexity of trying to set up vaccinations in settings that are not clinical.”

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