25. Tuberculosis is transmitted by
a. bacteria of the species M. tuberculosis that hitch a ride on microscopic droplets of moisture expelled from the
body of the infected person and inhaled by another person.
b. clothing once worn by an infected person, even after it is routinely cleaned.
c. exposure to residual fluids such as water or soda consumed by the infected person.
d. M. tuberculosis bacteria exposed to the ultraviolet light found in sunshine.
26. It has been estimated that 5 percent of new cases of tuberculosis
a. are the result of intravenous drug use.
b. are resistant to at least one antibiotic used to treat this disease.
c. are resistant to all antibiotics used to treat this disease.
d. are found in persons with circulatory problems.
27. Which of the following is true of hepatitis type A?
a. It is never transmitted by sharing intravenous needles.
b. Exposure to blood or other body fluids from an infected person is not a danger.
c. Five percent of cases in the U.S. involve the sharing of intravenous needles.
d. It can only infect the victim if he or she is also simultaneously exposed to the Hepatitis type D virus.
28. One potential consequence of HVA infection is
a. death in rare cases.
b. acute liver failure in about 25 percent of cases.
c. relapsing hepatitis in about 25 percent of cases.
d. hepatitis-related dementia in rare cases.