Advocate staff photo by BILL FEIG -- As DHH Secretary Kathy Kliebert and LSU baseball coach Paul Mainieri watch, background, Lt. Gov. Jay Dardenne, left, gets his flu shot from Michelle Donaldson, R.N., to kick off last year's statewide flu vaccination campaign in this December 2013 Advocate file photo.

Lt. Gov. Jay Dardenne and state health officials received their annual flu shots, as part of efforts to remind the public to take measures to “Fight the Flu.”

Dardenne, Health and Hospitals Secretary Kathy Kliebert and Public Health Assistant Secretary J.T. Lane were vaccinated Wednesday at a Baton Rouge health unit.

The health department estimates between 450,000 and 900,000 Louisiana residents become infected with the flu each year. Louisiana is one of six states around the country that already is reporting widespread flu activity this season.

Health officials say while everyone should get a vaccine, it is critical for high-risk groups like young children, the elderly, health care workers and pregnant women. Information on where to get vaccinated is available at www.fighttheflu.la.gov .