Coronavirus

2019-20 coronavirus outbreak

Statistics

Virology

China

Archaeology

Telecommunications

Economics

Computer science

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)

Outbreak

Coronavirus disease 2019 (COVID-19)

Asymptomatic

Estimation

Mathematics

Management

Geography

Infectious disease (medical specialty)

Internal medicine

Geometry

Medicine

Transmission (telecommunications)

Pandemic

Disease

Incidence (geometry)

Asymptomatic carrier

International Journal of Infectious Diseases

The number of novel coronavirus (COVID-19) cases worldwide continues to grow, and the gap between reports from China and statistical estimates of incidence based on cases diagnosed outside China indicates that a substantial number of cases are underdiagnosed (Nishiura et al., 2020a). Estimation of the asymptomatic ratio—the percentage of carriers with no symptoms—will improve understanding of COVID-19 transmission and the spectrum of disease it causes, providing insight into epidemic spread. Although the asymptomatic ratio is conventionally estimated using seroepidemiological data (Carrat et al., 2008; Hsieh et al., 2014), the collection of these data requires significant logistical effort, time, and cost.

Estimation of the asymptomatic ratio of novel coronavirus infections (COVID-19)