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Using the live vaccine is a trade-off, but there is clear roadmap to eliminate the need for it, one that requires coordinated global surveillance and decision-m
by akamaka 7y ago
Using the live vaccine is a trade-off, but there is clear roadmap to eliminate the need for it, one that requires coordinated global surveillance and decision-making.
The global strategy for all areas that have eradicated wild polio viruses is to switch from using OPV with live attenuated polio virus to IPV with the killed virus. On April 26, 2016, health authorities around the world implemented a global synchronous switch in which all trivalent oral polio stocks – containing all three strains of the virus – were destroyed to prevent any form of the live type 2 vaccine circulating again. Only a bivalent oral polio vaccine containing the live weakened type 1 and type 3 viruses has been used since then along with the trivalent IPV containing killed strains of all three types of viruses.
https://www.google.ca/amp/s/amp.scroll.in/pulse/910881/polio-vaccine-shortages-pose-a-great-risk-to-children-even-if-india-is-polio-free https://www.google.ca/amp/s/amp.scroll.in/pulse/910881/polio...