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Fig. 2 | BMC Infectious Diseases

Fig. 2

From: Time-dependent risk of COVID-19 death with overwhelmed health-care capacity in Japan, 2020–2022

Fig. 2

Changes in critical care beds in Osaka Prefecture. The dark-grey area shows the prevalence of severe cases admitted to intensive care units (ICUs) in Osaka Prefecture; the light-grey area indicates the prevalence of mild cases in high care units (HCUs) in Osaka Prefecture; and the shaded area shows the prevalence of severe patients in HUCs. Severe cases in Japan were defined as patients requiring ICU management or having respiratory failure and requiring mechanical ventilation. Mild cases were defined as patients who did not necessarily require ICU treatment. In Osaka Prefecture, the ICUs were saturated in the 2nd week of April 2021; the number of ICU patients started to decrease in the 1st week of May 2021. The thick dotted line indicates the number of available ICU beds at the time. The thin dotted line shows the number of available beds in ICUs and HCUs combined

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