Figure 2. Flu taking off except in Midwest.

Virus shed from infections into sewage is shown as the average of daily samples (in millions) taken each week ending as indicated.

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Virus level in West for week ending November 2 is a 4-day average.

Chart: Henry A. Choy, COVID and Vaccine UpdateSource: Derived with WastewaterSCAN dataCreated with Datawrapper