試題詳解

32. Which of the following statement about vaccines is NOT true?
(A) The development of vaccines can be based on attenuated pathogens or material from killed organisms.
(B) Attenuation could be achieved by growing the virus in cultured cells.
(C) There is no effective vaccine available for Tuberculosis.
(D) Current BCG vaccine (Bacillus Calmette-Guerin vaccine) effectively prevents from primary infection.