Image: Polio immunization days PHIL 2445
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Description: People in Columbus, Georgia awaiting polio vaccination during the earlier days of the National Polio Immunization Program. In the early 1950's, there were more than 20,000 cases of polio each year. After polio vaccination began in 1955, cases dropped significantly. By 1960, the number of cases dropped to about 3,000, and by 1979 there were only about 10. PHIL 2445
Title: Polio immunization days PHIL 2445
Credit: http://phil.cdc.gov/phil/details.asp
Author: CDC/Charles N. Farmer
Usage Terms: Public domain
License: Public domain
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