SARS-CoV-2(19) collected(12) database(11) Mutation(11) COVID-19(10) addition(9) Protein(9) Patient(9) genomic(8) variant(8) Surveillance(8) Coronavirus disease 2019(7) caused(7) Cluster(6) Clusters(6) prevalent(5) occur(5) omicron(5) B.1.1.529(5) World Health Organization(5) amino acid residues(5) amino acid residue(5) analyzed(5) other variant(5) Replication(5) Linkage disequilibrium(5) viral nucleic acid(5) primer(5) nonsynonymous mutation(5) imperative(5)