Fig. 1From: Comparison of patients hospitalized with COVID-19, H7N9 and H1N1a Distribution of the number of days of hospitalization for patients with COVID-19, H7N9 and H1N1. b The days from illness onset to severity for severe patients with COVID-19 and H7N9. COVID-19: Coronavirus disease 2019, H7N9: avian-origin influenza A (H7N9) virus, H1N1: influenza A (H1N1) virusBack to article page