The number of new cases of infectious diseases over a certain time period is called

Select one:

a. prevalence

b. mortality rate

c. incidence

d. morbidity rate

e. none of the above

Answer: c. Incidence

Explanation:

Incidence can be define as the cases of new infection of a disease occurring in a particular period of time and in a particular region. Incidences can vary depending upon the virulence of the pathogen within different subsets of the population - age, gender, and racial origin.