Contact tracing and isolation key to controlling SARS-CoV2 in Shenzhen, report finds

Contact tracing to rapidly isolate people who could be infected with coronavirus disease 2019 (COVID-19) reduced the length of time people were infectious in the community over 4 weeks (from 14 January to 12 February 2020) in Shenzhen, China, according to newly published results from 391 cases and 1,286 of their close contacts.