Q: The incidence in the community increases and the duration of the disease increases.

Q: The incidence remains unchanged and the duration increases.

The chart above shows the prevalence of disease in a community over a 10-year period. Assume that the population size of the community remains the same over time (steady state). Your job as a health department employee is to list possible explanations for the trend. For each potential explanation below, indicate whether it is consistent with the chart or inconsistent with the chart.