Winter COVID Surge: Wastewater Data Shows Rising Infections
COVID infections are increasing across the U.S., with the highest levels in western and southern states, according to wastewater surveillance. Hospitalizations have not yet risen, possibly because the dominant XFG strain has been circulating for over a year. Experts advise taking precautions as the respiratory illness season approaches.
Wastewater surveillance has tracked a steady national rise in SARS-CoV-2 since July, with the sharpest increases concentrated in western and southern states. The dominant XFG strain has circulated for over a year, which may explain why hospitalization rates have not yet followed the uptick in viral levels and positive tests.
Updated vaccines for this season are formulated against XFG variants, and both mRNA and protein options remain available with insurance coverage. Experts advise vaccination by mid-October, with faster action recommended for higher-risk individuals. Symptoms continue to range widely, from fever and congestion to gastrointestinal distress, and long COVID remains a persistent concern.
This surge may affect millions as respiratory illness season approaches, particularly older adults and immunocompromised individuals who face higher risks of severe outcomes. While widespread immunity from the long-circulating XFG strain could temper hospitalizations, the continued threat of long COVID may push some to seek earlier vaccination or renewed precautions. Public health messaging could shape behavior, though fatigue with COVID guidance may limit response.