How to Use "prevalence" with Example Sentences

1. The growing prevalence of alzheimer 's has also heightened anxiety about mental acuteness .
2. Nonetheless , the widespread prevalence of non-suicidal self-injury does represent a public health concern .
3. Many countries in the middle east impose strict restrictions-and also report among the lowest hiv prevalence rates .
4. More recent research shows a considerably higher prevalence .
5. Smoking prevalence has stalled at 20 percent of adults and , ominously , about the same proportion of high school seniors .