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In the United Kingdom, test positivity rates have climbed steadily, surpassing the 8% threshold in recent weeks—a figure that often signals widespread community transmission. Simultaneously, in the United States, wastewater surveillance data shows a marked increase in viral loads, a metric that health experts often rely on as a leading indicator of an upcoming wave. This dual-hemisphere surge reveals a familiar but frustrating pattern: a high volume of infections, many of which are likely going unreported or unnoticed by traditional clinical testing. This “hidden wave” is defined less by the dramatic, high-stakes headlines of years past and more by a persistent, background increase in illness that impacts productivity, healthcare resources, and the daily lives of millions.
