Alliance for Pandemic Preparedness

February 24, 2020

Estimating the Asymptomatic Ratio of 2019 Novel Coronavirus onboard the Princess Cruises Ship, 2020

Category:

Topic:

  • Researchers estimated that 34.6% (95% CI: 24.9%-39.8%) of COVID-19 cases on the Princess Cruises Ship docked off the coast of Yokohama, Japan, were asymptomatic, with most infections occurring prior to the start of the 2-week on-board quarantine.

Mizumoto et al. (Feb 23, 2020). Estimating the Asymptomatic Ratio of 2019 Novel Coronavirus onboard the Princess Cruises Ship, 2020. Pre-print downloaded Feb 23 from https://doi.org/10.1101/2020.02.20.20025866