COVID on the rise in 49 states: Symptoms to watch for, including some new ones

COVID is currently increasing across 49 states, with experts identifying several key drivers for the surge. The rise is attributed to behavioral and environmental changes, specifically as extreme heat pushes individuals indoors and students return to school. Additionally, the virus's natural life cycle and the current state of population immunity are contributing factors. Health professionals are advising the public to monitor for symptoms, noting that some new manifestations of the virus have emerged during this period.