Rising Cases of COVID-19 in Certain U.S. Regions
While overall activity for COVID-19 remains low in the United States, recent data suggests that infections are on the rise in specific areas of the country. According to a report from the Centers for Disease Control and Prevention (CDC), there has been an increase in cases across several states, particularly in the Southeast, South, and along the West Coast. The CDC categorizes these levels as “low,” which is the second-lowest on its scale.
The agency uses various metrics to monitor the spread of the virus, including wastewater data. This data indicates that positive tests for COVID-19 are rising nationwide, and emergency department visits among children aged 0 to 4 have also increased. These findings highlight the importance of continued vigilance, even as overall case numbers remain relatively low.
Wastewater Data Shows Elevated Virus Levels
Wastewater monitoring by the CDC shows high levels of the virus in several states, including California, Florida, Hawaii, Louisiana, Nevada, South Carolina, and Texas. However, no states are currently reporting very high levels of the virus. This data helps public health officials track the spread of the virus in real-time, allowing for more targeted responses.
In addition to tracking COVID-19, the CDC also monitors other respiratory illnesses. Seasonal influenza activity is considered low, and respiratory syncytial virus (RSV) activity is described as very low. Overall, the level of respiratory illness in the U.S., which includes a range of symptoms and conditions diagnosed in emergency departments, remains very low.
Other Respiratory Illnesses on the Rise
Another illness that has seen an increase is Mycoplasma pneumoniae, often referred to as “walking pneumonia.” The CDC has noted that this bacterial infection has become elevated in some parts of the country over the past few weeks. While it typically causes mild upper respiratory tract infections, it can sometimes lead to pneumonia. Symptoms include prolonged coughing fits, vomiting during coughing, and a distinctive “whooping” sound when inhaling after a coughing episode.
Whooping cough, or pertussis, has also been a concern. Although the number of cases has decreased since its peak in November 2024, it remains higher than pre-pandemic levels. The infection poses the greatest risk to infants under one year old, according to the Mayo Clinic. Its symptoms can be severe and may require medical intervention.
Monitoring New Variants
The CDC has not updated its variant estimates since mid-June. In its last update, the agency noted a growing presence of variants such as NB.1.8.1 and XFG, both of which were classified as “variants under monitoring” by the World Health Organization (WHO). The WHO has stated that there is no evidence suggesting additional public health risks associated with these variants compared to other circulating Omicron lineages.
The NB.1.8.1 variant has been linked to a surge in cases in mainland China. However, due to concerns about transparency and accuracy of data from local authorities, information from healthcare workers and doctors is considered more reliable for understanding the situation on the ground.
Predicting Future Trends
A recent analysis by CDC researchers suggests that the spread of COVID-19 follows a biannual pattern, with peaks occurring in the summer and winter months. The report notes that this trend is expected to continue as long as the SARS-CoV-2 virus continues to evolve rapidly and maintain cyclical patterns in its genetic makeup.
This insight could help public health officials better prepare for future surges and implement preventive measures accordingly. As the nation continues to monitor the virus and its variants, staying informed and following public health guidelines remains essential.
