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Table 1 Definition of the severity of COVID-19 by the Ministry of Health, Labour and Welfare

From: Healthcare costs for hospitalized COVID-19 patients in a Japanese university hospital: a cross-sectional study

Severity

Definition

Mild

People who have no respiratory symptoms or cough, only; no shortness of breath

Moderate

People who have shortness of breath and pneumonia findings

 Moderate I

People who do not need oxygen supply

 Moderate II

People who need oxygen supply

Severe

People who need hospitalization to ICU using a ventilator face life-threatening crises

  1. ICU intensive care unit