Cases are rising quickly in 47 US states during this period. A new wave is spreading nationwide. Data shows infection numbers increasing across the country. Health officials are monitoring the fast spread carefully. Reports say this is happening before the usual flu season starting. Hot spots are concentrated in the central and southern regions. Experts point to higher mobility and reduced face-covering use as reasons for the rise. Flu activity remains low for now. Hospitalizations have not increased yet. People are being told to stay cautious as the trend continues.