Living things adapt. Viruses adapt very quickly. Vaccines inconvenience viruses, which adapt to work around them. "What does not kill us makes us stronger" (that's what the viruses chant when they hold a pep rally).
Living things adapt. Viruses adapt very quickly. Vaccines inconvenience viruses, which adapt to work around them. "What does not kill us makes us stronger" (that's what the viruses chant when they hold a pep rally).
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