Comment 2 www.thelancet.com/infection Published online March 5, 2020 https://doi.org/10.1016/S1473-3099(20)30152-3crucial uncertainties such as clinical severity, extent of transmission and infection, and treatment options, and accelerate the development of diagnostics, therapeutics, and vaccines. We also need to minimise social disruption and economic impact through international, collaborative and multisectoral approaches. Most importantly, we need to communicate the epidemiology and risks of COVID-19 clearly, both to health-care workers and to the general population, and to implement infection prevention and control measures that are based on sound scientific principles.We declare no competing interests.