Home Risk Management/Safety Walgreens Flu Index Shows Flu Activity Trending 10 Times Higher Year over Year Walgreens Flu Index Shows Flu Activity Trending 10 Times Higher Year over Yearadmin Oct 25, 2022 0 Comments Walgreens launched the 2022–2023 Walgreens Flu Index to help communities track flu activity in their area and serve as an important reminder to get protected with an annual flu shot.