Vaccines against viruses are made from:
A)killed organisms or extracts of antigens.
B)live organisms weakened to produce antigens, which limits controllable infection.
C)purified toxins that have been chemically detoxified without loss of immunogenicity.
D)recombinant pathogenic protein.

Question

Quizplus · Accepted Answer

Most vaccines against viral infections (e.g., measles, mumps, rubella, varicella [chickenpox], rotavirus) contain live viruses that are weakened (attenuated) to continue expressing the appropriate antigens but are unable to establish more than a limited and easily controlled infection.

Vaccines Against Viruses Are Made From