1 Never use a microwave or conventional oven to pre-heat your flask. 2  If your flask has not been used for some time, rinse with warm water to remove any residual odours.  DO NOT overfill your flask. Leave sufficient space in the neck to fit the stopper.
Prevalence is a measure of disease that allows us to determine a person's likelihood of having a disease. Therefore, the number of prevalent cases is the total number of cases of disease existing in a population.
as the number of cases out of a certain population. For example, the prevalence of HIV/AIDS in. Australia in 2011 was 0.155%, or 115 out of every 100 000 people. 2 This is also known as âpointâ. prevalence as it provides a picture of what is occurring at a certain point of time.