Image:Polio physical therapy.jpg

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Description	English: This physical therapist is assisting two polio-stricken children holding on to a rail while they exercise their lower limbs. In the early 1950s there were more than 20,000 cases of polio each year. After the polio vaccination was introduced in 1955 that figure dropped to about 3,000 per year by 1960. فارسی: فیزیوتراپی برای فلج اطفال در دهه ۱۹۵۰ میلادی امریکا.
Source	This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #2612. Note: PHIL pages cannot be bookmarked; instead enter 2612 into the ID search page. Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers.
Date	1963
Author	Photo Credit: Content Providers: CDC/Charles Farmer
Permission (Reusing this image)	PD-USGov-HHS-CDC English: None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.

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This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made during the course of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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