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Polio vaccine

The IPV or ‘inactivated polio vaccine’ is made from killed virus, unlike the live polio drops used for many years in the UK. The original trials of the killed IPV vaccine, conducted in the USA in 1954 on over 600,000 schoolchildren showed that the vaccine was between 60% and 90% effective in preventing paralytic polio. Provided it is inactivated properly and free of contamination it is a very safe vaccine.
