COVID-19	coronavirus disease 2019
SARS-CoV-2	severe acute respiratory syndrome coronavirus 2
WHO	World Health Organization
ICU	intensive care unit
CT	computed tomography
RP	recovered patient
PCS	Post COVID-19 Syndrome
LPS	lipopolysaccharide
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
rt-PCR	reverse-transcription polymerase chain reaction
BMI	body mass index
VOC	dominant variant of concern
GISAID	Global Initiative on Sharing All Influenza Data
PP	pooled prevalence
CI	confidence interval
OR	odd ratio