Wafaa El-Sadr, MD, MPH, MPA discusses an uptick in COVID-19 case positivity rates and the reasons behind the increase.

“The positivity is rising due to an increase in the number of infections likely occurring among unvaccinated individuals,” Wafaa El-Sadr, an epidemiologist at the Columbia Mailman School of Public Health, told the Financial Times. “Positivity is higher in communities with lower vaccine uptake.”

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