People were not careful and wanted to take the selfie to show people that they did something cool. Mainly just to brag on the internet or feel righteous about themselves. Also by not taking the correct precautions
good hmmm and free and more good
True because higher the prevalence of the behavior before the program, the more difficult it becomes to increase the prevalence of the behavior.
Prevalence is the proportion of a particular population found to be affected by a medical condition at a specific time. Prevalence, sometimes referred to as prevalence rate, is the proportion of persons in a population who have a particular disease or attribute at a specified point in time or over a specified period of time.
The prevalence is often useful as it reflects the burden of a disease in a certain population. This is not limited to burden in terms of monetary costs, it also reflects burden in terms of life expectancy, morbidity, quality of life, or other indicators.
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