The Race Against Polio: Jonas Salk and Albert Sabin
The Scourge of Polio
Polio, also known as infantile paralysis, was a highly contagious disease that paralyzed thousands of people in the United States each year during the first half of the 20th century. The disease spread through contact with contaminated water or food, and there was no cure.
The Search for a Vaccine
As polio ravaged the country, two brilliant scientists, Jonas Salk and Albert Sabin, raced against time to develop a vaccine. Salk focused on a killed-virus vaccine, while Sabin worked on an oral, live-virus vaccine.
Jonas Salk: The Killed-Virus Vaccine
Jonas Salk was born in New York City in 1914. He was a gifted student who was inspired by the intellectual challenges of medical research. After graduating from medical school, Salk began working on a vaccine for polio.
Salk’s approach was to use a killed virus to stimulate the body’s immune system to produce antibodies against polio. He cultivated polio viruses on cultures of monkey kidney cells, killed the viruses with formaldehyde, and then injected the killed virus into monkeys. The experiments worked, and Salk moved on to human trials.
Albert Sabin: The Oral, Live-Virus Vaccine
Albert Sabin was born in Poland in 1906. He came to the United States in 1921 and attended medical school at New York University. After graduating, Sabin began research on the causes of polio.
Sabin discovered that the polio virus lived and multiplied in the small intestine. He believed that an oral vaccine could block the virus from entering the bloodstream, destroying it before it spread.
The Polio Vaccine Trials
Salk’s killed-virus vaccine was tested in a large-scale field trial in 1954. Nearly two million schoolchildren participated in the study, and the results were overwhelmingly positive. The vaccine was safe and effective, and it dramatically reduced the number of polio cases in the United States.
Sabin’s oral, live-virus vaccine was also tested in large-scale trials. The results were again positive, and the vaccine was approved for use in the United States in 1963.
The Eradication of Polio
Sabin’s oral vaccine became the standard vaccine for polio eradication around the world. The vaccine is inexpensive and easy to administer, and it has been highly effective in preventing the spread of polio.
Polio has now been eradicated from most of the world, but it remains a threat in some developing countries. However, thanks to the tireless efforts of Jonas Salk, Albert Sabin, and other scientists, polio is no longer the scourge it once was.
The Legacy of Jonas Salk and Albert Sabin
Jonas Salk and Albert Sabin are two of the most important figures in the history of medicine. Their work on the polio vaccine has saved countless lives and helped to make the world a healthier place.
Salk’s killed-virus vaccine was the first to be developed, and it played a major role in reducing the incidence of polio in the United States. Sabin’s oral, live-virus vaccine is the standard vaccine used today, and it has been instrumental in the global eradication of polio.
The legacy of Salk and Sabin is one of innovation, dedication, and perseverance. Their work is a testament to the power of science and the importance of collaboration in the fight against disease.