How immunisation can eliminate polio?
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The inactivated polio vaccine (IPV, or Salk) contains trivalent fully inactivated virus, administered by injection. This vaccine cannot induce VAPP nor do cVDPV strains arise from it, but it likewise cannot induce contact immunity and thus must be administered to every individual.
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Strategy. The most important step in eradication of polio is interruption of endemic transmission of poliovirus.
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