What sort of flu season are we having?
It’s not possible to say at this point what the rest of this flu season will be like. While flu spreads every year, the timing, severity, and length of the season usually varies from one season to another.
As of late December, all national key flu indicators are elevated and about half of the country is experiencing high flu activity. Flu activity is expected to continue into the coming weeks, with increases occurring especially in those states that have not yet had significant activity.
Influenza A (H3N2) viruses are most common so far. H3N2-predominant seasons have been associated with more severe illness and mortality, especially in older people and young children, relative to seasons during which H1N1 or B viruses predominated. There are early indications that this season may be severe, especially for people aged 65 years and older and young children.