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Summer COVID Surge: Nearly Every State Sees Increase
1 Sep
Summary
- COVID-19 cases are increasing in nearly every U.S. state.
- The current rise is attributed to the annual 'summer surge' phenomenon.
- Wastewater data indicates highest viral activity in the southern US.

COVID-19 cases are increasing in nearly every U.S. state as the summer season winds down. This observed pattern, referred to as the 'summer surge,' has been noted annually since approximately 2022. Factors contributing to this rise include changes in behavior, environmental conditions, and the natural fluctuation of virus activity and immunity.
According to the latest data from the Centers for Disease Control and Prevention (CDC) as of August 28, national COVID activity remains at a 'very low' baseline despite consistent increases. As of August 26, infections were estimated to be growing in 48 states, with only Iowa not providing data and Rhode Island and Washington D.C. showing stable activity.
Wastewater surveillance data for the week ending August 22 reveals that the southern United States is experiencing the highest viral activity. Texas reported 'very high' levels, while Mississippi indicated 'high' activity. Several other states, including California, Nevada, Florida, Rhode Island, Louisiana, and Washington, showed 'moderate' levels, with most other states remaining in the 'low' or 'very low' categories.