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Weekly wastewater viral activity levels for influenza are provided by the Centers for Disease Control and Prevention (CDC). The data includes state-level and national WVAL metrics with categorical classifications from 'Very Low' to 'Very High'. It is published by data.delaware.gov and was last updated in April 2026.
The `Week_Ending_Date` and `Data_Collection_Period` columns must be parsed for time-series analysis. The `Coverage` column should be reviewed for geographic representation bias.
| # | Column Name |
|---|---|
| 1 | StateOrTerritory |
| 2 | Coverage |
| 3 | Regional_WVAL |
| 4 | Data_Collection_Period |
| 5 | Week_Ending_Date |
| 6 | National_WVAL |
| 7 | WVAL_Category |
| 8 | StateOrTerritory_WVAL |