Flu season is ramping up, and some experts are "pretty worried"

TL;DR

A new H3N2 influenza strain is spreading quickly, potentially leading to a tougher flu season.
Fewer people are getting flu shots this year.
17 U.S. jurisdictions are reporting high or very high levels of flu.
H3N2 has evolved in ways that make it harder for the immune system to recognize.
The flu vaccine is still recommended, especially for high-risk groups, as it can mitigate risk and reduce severe illness.
Early data suggest the vaccine's effectiveness may decrease over time.
The CDC estimates 4.6 million flu cases and 1,900 deaths in the U.S. this season.
Symptoms can include high fevers, body aches, cough, and vomiting in children.
Antiviral medications are effective when started early.
Avian flu (H5N5) has had a first human case in Washington state, posing a low-probability, high-impact threat.
Improved surveillance in agriculture is crucial for monitoring flu strains and preventing new ones.
Maintaining good hygiene and getting vaccinated are key preventative measures.

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