AKI	Acute Kidney Injury
ALT	Alanine Aminotransferase
ANE	Acute Necrotizing Encephalopathy
ARDS	Acute Respiratory Distress Syndrome
AST	Aspartate Aminotransferase
CDC	Centers for Disease Control and Prevention
CI	Confidence Interval
COVID-19	Coronavirus Disease 2019
CRP	C-Reactive Protein
CRRT	Continuous Renal Replacement Therapy
ECMO	Extracorporeal Membrane Oxygenation
HCO3−	Bicarbonate
HFNC	High-Flow Nasal Cannula
IAE	Influenza-Associated Encephalopathy
IQR	Interquartile Range
LDH	Lactate Dehydrogenase
MV	Mechanical Ventilation
NPI	Nonpharmaceutical Intervention
NIV	Non-Invasive Ventilation
OR	Odds Ratio
PaCO2	Partial Arterial Carbon Dioxide Pressure
PaO2	Partial Arterial Oxygen Pressure
PARDS	Pediatric Acute Respiratory Distress Syndrome
PCR	Polymerase Chain Reaction
PICU	Pediatric Intensive Care Unit
PCT	Procalcitonin
RSV	Respiratory Syncytial Virus
RT-PCR	Real-Time Reverse Transcriptase Polymerase Chain Reaction
SARS-CoV-2	Severe Acute Respiratory Syndrome Coronavirus 2
SPSS	Statistical Package for the Social Sciences
VIS	Vasoactive–Inotropic Score