Explain the relationship between prevalence and incidence and how they correlate with each other

Explain the relationship between prevalence and incidence and how they correlate with each other

Answer the following question in essay format while using citations and references.

1. Explain the relationship between prevalence and incidence and how they correlate with each other.

2. Calculate the incidence rate (per 100,00 population of primary and secondary syphilis (combined) in 2013 from the following data:

Number of reported cases in 2013: 17, 479

Estimated population of the United States as of July 1, 2013: 316,128,839.