Share of population with exposure notifications activated

Representing residents of 23 states and D.C. that have downloaded exposure notification apps or activated EN Express as of early May, 2021.

North Dakota's figure represents active users, not total downloads. For D.C., the broader metro area population was used (rather than District residents only) because anyone living/working in D.C. may use this system.

Chart: Betsy Ladyzhets / MIT Technology Review Source: State public health departments, US Census Get the data