Fig. 1

Phylogenetic characterization of SARS-CoV-2 based on 7096-aa polyprotein pp1ab: Phylogenetic tree demonstrating the relationship of SARS-CoV-2 strains isolated from Pakistan to other CoVs. Phylogenetic analysis involved 122 pp1ab sequences from the subfamily Coronavirinae, including representatives of four genera; α -CoV, β -CoV, γ -CoV, and δ -CoV (Note: 55 SARS-CoV-2 pp1ab sequences from Pakistan are included in phylogenetic analysis). The color codes distinguish between various groups/types of coronaviruses. The phylogenetic tree was reconstructed using the neighbor joining method with the p-distance as substitution model. Bootstrap values ≥ 50% are shown along the branches. A scaled phylogram of this tree with branch lengths reflecting the amount of genetic change is provided as Fig. S1 in Additional File 2