In a preliminary flu season severity assessment, the CDC said the season has been moderate.
Most errors didn't result in an adverse event, and the few that did were recorded as nonserious.
Signs are encouraging, though activity sometimes rises again after the holiday period.
Some downward trends might reflect changes in holiday-related health seeking behaviors.
Though COVID wastewater and test positivity are higher than last year at this time, medical encounters are trending lower.
Flu and COVID indicators continued upward trends, with different regions reporting the most intensive activity.
Nirsevimab was 83.2% effective in preventing hospitalization for RSV-associated lower respiratory tract infections.
Emergency department visits for COVID were highest in infants and older adults.
The researchers say healthcare providers, public health officials must encourage vaccination, especially for those at highest risk.
Levels for three viruses are elevated or rising, as the CDC warned of further impacts and urged stepped-up vaccination.