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polio vaccine
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Polio vaccine
How did the polio vaccine change the world?
Watch archival footage of children with polio, and see Jonas Salk administerpolio vaccine as the nationwide immunization effort began
oral polio vaccine Jonas Salk; polio vaccine historical mass vaccination programs in the United States
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Polio vaccine
Polio vaccine A health care worker giving a polio vaccine to a child in Katsina state, Nigeria, 2014.

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News •

Roadside bomb kills 3 police officers escorting polio workers in northwest Pakistan • Dec. 17, 2024, 3:18 PM ET (AP)
Trump says he's a 'believer' in polio vaccine, and other news conference takeaways • Dec. 16, 2024, 5:18 PM ET (AP)
Pakistan begins last anti-polio vaccination campaign of the year after a surge in cases • Dec. 16, 2024, 5:18 AM ET (AP)

polio vaccine, preparation of poliovirus given to prevent polio, an infectious disease of the nervous system. The first polio vaccine to be widely used in humans, known as inactivated poliovirus vaccine (IPV) or Salk vaccine, was developed in the early 1950s by American physician Jonas Salk. This vaccine contains killed virus and is given by injection. The large-scale use of IPV began in February 1954, when it was administered to American schoolchildren. In the following years, the incidence of polio in the United States fell from 18 cases per 100,000 people to fewer than 2 per 100,000. In the 1960s ...(100 of 358 words)

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