Enlarge / The Centers for Disease Control and Prevention (CDC) headquarters stands in Atlanta, Georgia, on Saturday, March 14, 2020. (credit: Getty | Bloomberg) The tally of COVID-19 cases linked to a conference of disease detectives hosted by the Centers for Disease Control and Prevention in April has reached at least 181, the agency reported. Roughly 1,800 gathered in person for this year's annual Epidemic Intelligence Service (EIS) Conference, which was held on April 24 to 27 in a hotel conference facility in Atlanta where the CDC's headquarters are located.