20 - Polio’s Persistent Shadow: Historical Lessons from Boston and the New Era of Disease Detection

Publication Number: 2017.20

Adedapo Kiladejo, St. Christopher's Hospital for Children, Philadelphia, PA, United States; Folasade I. Kehinde, St. Christopher's Hospital for Children, Philadelphia, PA, United States

Background: Poliomyelitis, once a sporadic disease, became one of the most feared epidemics of the 20th century. Before the advent of vaccination, recurring outbreaks caused widespread paralysis, particularly affecting children. Boston was at the forefront of clinical innovation and vaccine-related research during the mid-century epidemics.

Objective: To highlight Boston’s historic role in combating poliomyelitis and contextualize recent detections of poliovirus in the United States within this legacy.

Design/Methods: Historical literature review and synthesis of contemporary surveillance data from the CDC, WHO, and peer-reviewed sources.

Results: Boston’s medical community played a central role in the response to early epidemics, pioneering respiratory care through the development and clinical use of the “iron lung” at Boston Children’s Hospital and Harvard. Polio epidemics in the 1940s-1950s prompted mass immunization drives following the introduction of the Salk vaccine in 1955. Now, nearly 70 years later, the virus is back, reemerging in the form of vaccine-derived strains. In 2022, a paralytic case in New York State and positive wastewater samples in multiple U.S. sites revealed silent transmission among communities that were under-immunized. These findings underscore a critical public health challenge with the persistent risk of reintroduction of polio even in regions long considered polio-free.

Conclusion(s): Boston’s historical innovations offer a blueprint for addressing modern challenges in surveillance and vaccination. The reemergence of poliovirus serves as a stark reminder that vigilance, immunization equity, and wastewater monitoring remain essential to sustain polio eradication gains.Figure 1
Timeline of Polio in Boston