Your flu shot can’t wait

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Some parts of the country are already seeing case levels typical of late fall or early winter.

Flu season is starting earlier than usual this year, which I know from reviewing federal data. But I also know it because I woke up with body aches and chills last night, mere days before I’d planned to get my flu vaccination (!).

Already, some parts of the country are seeing levels of flu activity typically associated with late fall or early winter. In Washington state, for instance, doctors are reporting seeing as much flu now as they usually would around Christmas.

Flu activity overall is still low, to be clear. But as of October 7, infections were rising in all 50 states. And flu is spreading before many people — like, say, me — have received their annual vaccine.

Epidemiologists don’t yet know why the flu arrived early this year, or why cases first started rising in Western states like Washington, California, and Nevada. It’s possible that a mutation is helping this year’s flu variants evade existing immunity, one virologist told NPR. International travel could play a role, too: Flu cases also spiked early in Japan and other parts of Asia.

We don’t need to know why the flu arrived early to take some basic precautions, though. So today, we’re talking through some practical tips for coping with an early flu season.

An early flu season doesn’t necessarily mean a worse season — but even a moderate season can do serious damage. Last year, influenza sent hundreds of thousands of people to the hospital and caused tens of thousands of deaths, including almost 200 among children.

The first and best way to avoid those kinds of harms is by getting the flu shot, which reduces the risk of serious illness by an average of 40 to 60 percent. In the US, people aged 6 months and older are typically told to get the vaccine by October’s end.

In light of the early onset, however (it takes two weeks to build up full immunity), you might instead want to get your shot ASAP.