February 24, 2020

Clinical Characteristics of 24 Asymptomatic Infections with COVID-19 Screened among Close Contacts in Nanjing, China

Category: Article Summary

Topic: Transmission

• 24 asymptomatic, laboratory-confirmed COVID-19 cases were identified via contact investigation in Nanjing. Five developed symptoms, twelve had abnormal CT, and seven had no symptoms and no abnormal CT during hospitalization. The seven cases were younger (med age 14 years). The median communicable period of all cases was 9.5 days but extended to up to 21. There is evidence of asymptomatic transmission resulting in secondary cases with severe illness.  

Hu et al. (Feb 23, 2020). Clinical Characteristics of 24 Asymptomatic Infections with COVID-19 Screened among Close Contacts in Nanjing, China. Pre-print downloaded Feb 24 from https://doi.org/10.1101/2020.02.20.20025619