In 1956, during the height of the polio epidemic in the U.S., health officials in Chicago offer polio shots at a public school.
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With poliovirus circulating in New York, health authorities worry that pockets of the county with low polio vaccination rates could give the virus a foothold.
Polio is endemic only in Afghanistan and Pakistan in 2022.
Sarah Poser, Meredith Boyter Newlove/CDC via AP
Massive vaccine distribution efforts take a lot of coordination. The rollout of the Salk polio vaccine in the US in 1955 holds lessons for those delivering COVID-19 shots today.
An emergency polio ward in Boston in 1955 equipped with iron lungs. These pressurized respirators acted as breathing muscles for polio victims, often children, who were paralyzed.
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Polio was nearly eradicated with the Salk vaccine in 1955. At the time, little was known about this mysterious disease that paralyzed and sometimes killed young children.
The oral polio vaccine is most commonly used in the developing world, despite one big problem.
CDC/Alan Janssen, MSPH
A challenge in eradicating polio comes from a version of the vaccine itself, which relies on live but attenuated virus. Rationally designing a new vaccine could help get rid of polio once and for all.