COVID-19 Case Investigation and Contact Tracing in New York City, June 1, 2020, to October 31, 2021

Abstract

Despite the complexity of developing a contact tracing program in a diverse city with a population of over 8 million people, in this case study we were able to identify 1.4 contacts per case and offer resources to safely isolate and quarantine to over 1 million cases and contacts in this study period.