AdvertisementCDC Official Who Warned Americans Coronavirus Could Cause 'Severe' Disruption ResignsUpdated May 07, 2021Becky SullivanfacebookEmailDr. Nancy Messonnier joins other officials during an early coronavirus briefing in January 2020: Dr. Robert Redfield (left), then CDC director; Alex Azar (center), then Department of Health and Human Services secretary; and Dr. Anthony Fauci. (AP)This article was originally published on May 07, 2021.