polio vaccine

noun
a vaccine administered to induce specific active immunity to poliomyelitis.
Also called poliomyelitis vaccine.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica
Encyclopedia

polio vaccine

preparation of poliomyelitis virus given to prevent infection with the disease. The virus is grown in kidney tissue from rhesus monkeys. There are two types of vaccine: one with killed virus, which is injected, and the other with live, attenuated (weakened) virus, which is given orally. Vaccines, whether killed or live, must contain strains of all of the three poliovirus types, and three doses are required, as the body develops immunity to only one type at a time.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
They were essential to developing the polio vaccine.
Another popular theory has it that the virus was an unfortunate side effect of polio vaccine testing.
The polio vaccine contains living but weakened viruses.
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