Assume that the incidence of HIV infection has remained constant in the United States at 40,000 new infections per year, while the point prevalence during the past 15 years has increased from
400,000 cases (mid-year estimate) to 900,000 cases (mid-year estimate).
What factor best explains this finding? (select one best answer)
The death rate due to HIV infection has decreased (better treatment available).
The numerator of the HIV infection rate has decreased.
The cure rate of AIDS (.e., symptomatic HIV infection) has decreased.
The denominator of the HIV infection rate has increased.
The average duration of HIV infected cases has increased.