| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | flu | Western countries | Getting a flu shot is common practice to prevent flu and its spread. | 1 |
| 2 | fluorine | Western countries | Fluorine is commonly added to drinking water and toothpaste for dental health. | 1 |
| 3 | fluorine | Western countries | Fluorine is commonly used to fluoridate public water supplies for dental health. | 1 |
| 4 | influenza | Western countries | Influenza is a common seasonal illness, and flu shots are widely recommended for prevention. | 1 |