Multiple Choice
Which of the following findings was essential for Edward Jenner's vaccination process?
A) Exposure to a milder disease form may produce immunity.
B) A weakened microorganism will not cause disease.
C) Someone who recovers from a disease will not acquire that disease again.
D) Disease is caused by viruses.
E) Pathogenic microorganisms infect all humans and animals in the same manner.
Correct Answer:

Verified
Correct Answer:
Verified
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