TABLE 1

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection diagnostic criteria

Major criteriaMinor criteria
Presence of new bilateral peripheral, middle and lower pulmonary infiltrates on chest radiograph New continuous cough, high temperature, and loss of sense of smell and or tasteLow blood lymphocyte count below the lower limit of normal (<1.0×109 per L) Low blood eosinophil count below the lower limit of normal (<0.04×109 per L) High C-reactive protein level (>50 mg·L−1) New oxygen requirements Contact with confirmed COVID-19 in household