Health officials say timing a flu shot matters as early regional outbreaks appear.

The article cites rising influenza in Florida, where one report says the season starts this week.

Oklahoma coverage asks how long flu shots last as that state’s season begins.

Vermont officials urge seasonal vaccines before illnesses rise and clinics fill up.

The piece says immunity can wane over several months, so timing matters for higher-risk people.

It says local patterns differ, and people should check health-department advice for their area.

Doctors in the article call the seasonal vaccine the main defense against severe flu complications.

The piece does not name one national date that is right for every state.

Read the full article on when to get a flu shot this season.