Table 1.

This table summarizes the clinical features encountered in pediatric COVID-19 patients according to disease severity and as described by various studies (15, 19–23).

Severity	Clinical features
Asymptomatic	Positive PCR test without clinical manifestations or radiologic findings.
Mild	Low- or high-grade fever, fatigue, myalgia, sore throat, headache, sneezing, dry cough, runny nose, nasal congestion, and gastrointestinal symptoms such as nausea, vomiting, abdominal pain, diarrhea, and non-severe pneumoniae on chest imaging.
Moderate	Lower respiratory tract infection symptoms, fever, dry or productive cough, wheezing, and positive findings on chest imaging.
Severe	Rapid progression of the disease with dyspnea, central cyanosis, increased respiratory rate above 70/min for infants and above 50/min for children greater above the age of 1 year, coma, convulsions, somnolence, severe dehydration, and oxygen saturation below 92%.
Critically ill	Rapidly progressing to acute respiratory symptoms, respiratory failure and end organ damage such as heart failure, shock, acute kidney injury, liver injury, encephalopathy, coagulopathy, or myocardial damage.