Wafaa El-Sadr, MD, MPH, MPA discusses the effects of the COVID-19 vaccine, despite an increase in the number of cases related to variants of the virus, which are now searchable in ZIP code-level data.

“To me that is reassuring,” said Dr. Wafaa El-Sadr, an epidemiologist at Columbia University’s Mailman School of Public Health. “We may be seeing the beginnings of a vaccine effect.”

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