![A poster warning of flu infections hangs on a tiled wall.](https://media.thecurrentla.com/wp-content/uploads/2023/09/14151407/Vax-2.jpg)
Louisiana had been strong on school vaccines. Rates are now falling.
More parents are opting out of school vaccination schedules for common childhood illnesses. Rates among Louisiana kindergartners fell below the threshold for herd immunity against measles.