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Articles on Polio

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For much of the 20th century, Americans were used to seeing people bearing the signs of past polio infection. Genevieve Naylor/Corbis via Getty Images

‘Got polio?’ messaging underscores a vaccine campaign’s success but creates false sense of security as memories of the disease fade in US

Polio vaccines have been a massive public health victory in the US. But purely celebratory messaging overlooks the ongoing threat if vaccination rates fall.
In 1956, during the height of the polio epidemic in the U.S., health officials in Chicago offer polio shots at a public school. Bettmann via Getty Images

Polio vaccination rates in some areas of the US hover dangerously close to the threshold required for herd immunity – here’s why that matters

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.
Critical-care patients in the emergency polio ward at Haynes Memorial Hospital in Boston in August 1955. Associated Press photo

Fears of a polio resurgence in the US have health officials on high alert – a virologist explains the history of this dreaded disease

Health officials say the new case of polio in New York state and the presence of poliovirus in the municipal wastewater suggests that hundreds more could already be infected with the disease.
Experts estimate that close to 90% of the U.S. population must be vaccinated to reach herd immunity for COVID-19. David McNew/AFP via Getty Images

What is herd immunity? A public health expert and a medical laboratory scientist explain

Vaccination campaigns like the ones that eventually eliminated polio and measles in the United States required decades of education and awareness in order to achieve herd immunity in the U.S. population.
Intensive care physicians are yet again facing ICU bed and staff shortages as severe COVID-19 cases rise. gorodenkoff/iStock via Getty Images Plus

Medicine is an imperfect science – but you can still trust its process

A critical care doctor brings a frontlines perspective to the frustration of dealing firsthand with vaccine hesitancy and discusses the limitations of science and medicine.
A high school student gets his COVID-19 shot at a pop-up vaccine clinic at a public charter school in Los Angeles. Al Seib / Los Angeles Times via Getty Images

Shutting down school vaccine clinics doesn’t protect minors – it hurts people who are already disadvantaged

For decades, US schools have been common sites for vaccine clinics to respond to outbreaks and provide catch-up immunizations. So why are they suddenly controversial?

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