The United States is experiencing a summer surge in COVID-19 cases, with rising infections in 40 states, particularly in the South and West. This uptick is largely driven by new highly contagious variants, including Nimbus and Stratus, which are causing symptoms similar to the previous Omicron strains. While the number of cases remains low compared to past waves, hospital visits and emergency room cases are increasing, with the CDC closely monitoring the situation.
COVID Surge Across 40 States
According to the Centers for Disease Control and Prevention (CDC), infections are increasing in many parts of the country, particularly in the mid-Atlantic, Southeast, Southern, and West Coast states. The CDC reports that 40 states have shown signs of increased COVID activity, with 9 states reporting stable numbers. Some of the hardest-hit states include California, Florida, and Texas, which are seeing a significant rise in cases and wastewater viral activity.
New Variants: Nimbus and Stratus
Two new SARS-CoV-2 variants, Nimbus (NB.1.8.1) and Stratus (XFG), have contributed to the surge. Nimbus, which is now the dominant variant in the U.S., accounts for 43% of cases as of late June. It is known for causing a painful “razor blade throat.” Another emerging variant, Stratus, is spreading rapidly and is causing an increasing proportion of cases, making it the third most prevalent strain in the U.S.
Symptom Overview: What to Watch For
The symptoms of these new variants are largely consistent with previous Omicron strains. Common COVID-19 symptoms in 2025 include:
- Sore throat
- Fever or chills
- Cough
- Shortness of breath
- Headache
- Muscle aches
- Congestion or runny nose
- Fatigue
- New loss of sense of smell or taste
- Nausea or vomiting
- Diarrhea
States on High-Risk List
COVID-19 cases are currently highest in the West and South, but this may change as the summer wave progresses. The high-risk states include:
- Connecticut
- Delaware
- Florida
- Georgia
- Indiana
- Kentucky
- Louisiana
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- New Jersey
- New York
- North Carolina
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- South Carolina
- Tennessee
- Texas
- Utah
- Virginia
- Washington
- Wisconsin
Additionally, wastewater surveillance data from the CDC shows high viral activity in states like Alabama, California, Florida, Texas, and Louisiana.
How to Protect Yourself
As COVID-19 cases rise during the summer months, experts recommend several measures to protect yourself and others:
- Stay up to date on COVID vaccinations.
- Test if you have symptoms or have been exposed to COVID.
- Isolate if you’re sick or suspect infection.
- Wear an N95 mask in crowded, indoor spaces.
- Practice social distancing where possible.
Conclusion
The recent rise in COVID-19 cases marks the beginning of the expected summer wave in the U.S., a pattern seen in previous years. With new variants circulating and hospital visits on the rise, it’s crucial to follow preventive measures to protect public health. Early detection and vaccination continue to be the most effective tools in combating the spread.
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