Which of the Following Statements Is True Concerning the Epidemiologic

Which of the following statements is true concerning the epidemiologic data about tuberculosis (TB) ?

A) TB is a relatively young disease, emerging in the United States in late 20th century.
B) Those with human immunodeficiency virus (HIV) are at great risk for contracting TB.
C) Healthcare workers are rarely at risk even when caring for high-risk individuals.
D) Immigrants from high occurrence countries are not at risk for TB due to vaccinations.