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. 2021 Jun 15;6(3):e00353-21. doi: 10.1128/mSystems.00353-21

FIG 3.

FIG 3

Mean frequency values of nucleotide mutations in the spike gene distinctive of SARS-CoV-2 B.1.1.7 lineage identified in nPCR C and nPCR D products synthesized from sewage concentrates and measured by NGS analysis. (A) Deletion of nucleotides 21765 to 21770 (deletion of amino acids HV69-70); (B) deletion of nucleotides 21991 to 21993 (deletion of amino acid Y144); (C) mutation A23063T (amino acid change N501Y); (D) mutation C23271A (amino acid change A570D). Error bars indicate standard errors of the mean. Mean numeric values are shown in Table 2. Statistical values associated with these data are shown in Table S2.