Table 2.

Clinical manifestations of SARS-CoV-2 infection in the pediatric population

Clinical classification	Clinical manifestations
Asymptomatic	Absence of clinical signs and symptoms Normal lung imaging Positive SARS-CoV-2 nucleic acid test
Mild	Mild clinical symptoms Upper respiratory tract infections (feverm cough, sore throat) Absence of pneumonia signs Gastrointestinal symptoms (nausea, vomiting, abdominal pain and diarrhoea)
Moderate	Fever and cough, dry and productive Wheezing without hypoxia or shortness of breathe, dry and/or wet rales Chest imaging shows pneumonia Some children can be asymptomatic but with positive chest imaging
Severe	Children show at least one of the following symtpoms: Increased respiratory rate accoding to the age Blood oxygen saturation at rest <92% Symptoms of hypoxia: assisted breathing (groaning, wing flaps, sags), cyanosis, intermittent apnea Unconsciousness: lethargy, coma, convulsions Difficulty in feeding
Critical	The disease progresses quickly and at least one of the following symptoms is present: Respiratory failure requiring mechainical ventilation Shock Combined with other organ failure, require intensive care unit