Fig. 1

Estimated Maximum likelihood phylogenetic tree of the 458 SARS-CoV-2 sequences obtained from population aged ≤ 18 years. The maximum likelihood was inferred from a core genome alignment of 29,164 bp. The phylogeny was estimated with IQTREE using the best-fit model of nucleotide substitution GTR + F + R3 with 1,000 replicates and fast bootstrapping. The numbers on leaves represent the sample IDs, and bootstrap values higher than 90 are shown on branches. SARS-CoV-2 genomes were highlighted in different colours against omicron lineages (first, inner circle). Information regarding symptoms (second circle), comorbidities (third circle) and hospitalization (fourth, outer circle) were also reported. Among symptoms, lower and upper respiratory tract infections were considered regardless of gastrointestinal symptoms.