The infection affects patients with and without underlying diseases, although the majority of the fatalities are older patients or patients with significant comorbidities [2]. The vast majority of reported cases have been in adults, decreasing our ability to draw inferences and make recommendations for pediatric patients. Despite its apparent increased infectivity (R0=2.2) the 2019-nCoV strain appears to be less virulent than SARS-CoV (case-fatality rate=9.5%) and MERS-CoV (case-fatality rate=34.4%); currently reported case-fatality rate of 2019-nCoV is 2.2% [3, 4]. Superspreaders (R0>10) have been identified in both MERS-CoV and SARS-CoV outbreaks and there are similar reports of 2019-nCoV superspreaders [4]. One should be mindful of the possibility of systematic underreporting in our current dataset, but the numbers represent our best estimates as of January 31, 2020, 02:30 GMT. (For updated information see: https://tinyurl.com/Hopkin-sCSSE)