Seth Berkley quoteSeth Berkley [0-0]
American Scientist
Quote rank: 102
Now, when you get a viral infection, what normally happens is it takes days or weeks for your body to fight back at full strength, and that might be too late. When you're pre-immunized, what happens is you have forces in your body pre-trained to recognize and defeat specific foes. So that's really how vaccines work. |
Strength
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