Walgreens has a sign up that says;
The CDC recommends
That
The Covid-19
&
The flu shots be taken together.
I have had my last flu shot at the Rx. Took it ~15 years ago and within 2 days my knees ached so badly that I could barely walk. Passed by after 3 days. Never had that happen before or sense. My dental hygienist had the same experience.