This study demonstrates that COVID-19 can be transmitted by asymptomatic carriers during the incubation period.
COVID-19 is a worldwide health concern with the total number of cases and transmission events far exceeding those of SARS and H1N1. it is important to consider whether asymptomatic infected individuals propagate the virus and impede infection control.
This study reported the clinical features of a family cluster involving five COVID-19 cases in Luzhou, China. Three cases came from Wuhan, and the other two cases had not left Luzhou recently. The researchers collected epidemiological and clinical characteristics, laboratory outcomes from electronic medical records, and confirmed symptoms with the patients and their families.
Findings suggest that COVID-19 is highly infectious and may be transmitted by asymptomatic carriers during the incubation period.