Alliance for Pandemic Preparedness

June 11, 2020

Clusters of Coronavirus Disease in Communities, Japan, January-April 2020

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  • Furuse et al. analyzed 3,184 cases of COVID-19 in Japan during January 15–April 4, 2020 and identified 61 case-clusters in healthcare and other care facilities, restaurants and bars, workplaces, and music events. They also identified 22 probable primary case-patients from non-nosocomial clusters, 9 of whom (41%) were pre-symptomatic or asymptomatic at the time of transmission. 

Furuse et al. (June 10, 2020). Clusters of Coronavirus Disease in Communities, Japan, January-April 2020. Emerging Infectious Diseases. https://doi.org/10.3201/eid2609.202272