Multiple choice

The vaccination against small pox involves the introduction of _____.

  1. killed germs

  2. weakened germs

  3. live antibodies

  4. activated germs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Smallpox vaccination uses weakened (attenuated) live virus - specifically the vaccinia virus, which is similar enough to smallpox to stimulate immunity but much safer. Killed germs would not produce effective immune memory. Live antibodies are not administered directly. Activated germs would cause disease rather than immunity.

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