Fig. 2
NYC T2 case investigation cascade by week, May 31, 2020 鈥� January 1, 2022. * Data Source: New York City Test & Trace (T2) case notification and contact tracing data. (). Red dashed line represents the percentage of total cases who provided contacts. Waves were defined as: Alpha鈥�=鈥�11/8/20鈥�5/1/21; Delta鈥�=鈥�7/25/21鈥�10/9/21; Omicron鈥�=鈥�11/14/21鈥�1/1/22