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Identification of the P681H mutation in sewers across Israel. Frequency of P681H mutation in SARS-CoV-2 genomes sequenced from nine sewage samples of wastewater treatment plants across Israel each month in August 2020–January 2021. The frequency of the P681H mutation in each region was estimated by measuring the fraction of the mutation from the total number of nucleotides mapped at this position (i.e., depth of sequencing).
