Jonas Salk: The Man Who Conquered Polio and Gave the Cure Away

The Moment Terror Ended

On April 12, 1955, at 10:20 in the morning, a scientist named Thomas Francis Jr. stood at a podium at the University of Michigan and announced the results of the largest medical trial in American history. The room held 500 people. Sixteen television cameras broadcast the event live. A nation held its breath.

The polio vaccine works. It is safe. It is effective.

Church bells rang. Factory whistles blew. People wept in the streets. Department stores broadcast the news over their loudspeakers. A Pittsburgh Press headline read: “SALK’S VACCINE WORKS!” The man who made it possible — a forty-year-old researcher named Jonas Salk — became, overnight, the most famous scientist in America.

He had conquered the disease that terrified a generation of parents, paralyzed tens of thousands of children, and filled hospital wards with iron lungs. And when asked who would profit from the discovery, he gave an answer that captured something essential about who he was:

“Could you patent the sun?”

Son of the Lower East Side

Jonas Edward Salk was born on October 28, 1914, in New York City, the eldest of three sons of Daniel and Dora Salk, Russian Jewish immigrants who had come to America with nothing. Daniel worked in the garment district. Dora — driven, ambitious, ferociously committed to her sons’ education — was the engine of the family.

The Salks lived in East Harlem, then the Bronx. They were not wealthy. They were not connected. They were part of the vast wave of Jewish immigrants who had poured into New York in the early twentieth century, bringing with them a reverence for education and an unshakable belief that their children would do better than they had.

Jonas was the fulfillment of that belief. He was bookish, quiet, and brilliant. He attended Townsend Harris High School — a public school for gifted students — and then the City College of New York (CCNY), graduating in 1934. He intended to study law but switched to medicine, entering New York University School of Medicine.

At NYU, he encountered Dr. Thomas Francis Jr., a virologist who was developing an influenza vaccine using a killed (inactivated) virus. Most researchers at the time believed that only live viruses could produce immunity. Francis showed that killed viruses could work too. This insight would prove decisive.

The Terror of Polio

To understand what Salk did, you have to understand what polio was.

Poliomyelitis is a viral disease that attacks the nervous system. In its most severe form, it destroys the nerve cells that control muscles, causing permanent paralysis — usually in the legs, sometimes in the muscles that control breathing. The disease primarily struck children. Its victims were visible everywhere: children in leg braces, children in wheelchairs, children in iron lungs — coffin-like machines that mechanically forced air in and out of paralyzed lungs.

Epidemics struck every summer. In 1952 — the worst year — there were nearly 58,000 cases in the United States, 3,145 deaths, and 21,269 cases of paralysis. Parents were terrified. Swimming pools were closed. Movie theaters were empty. Children were kept indoors. The National Foundation for Infantile Paralysis (later the March of Dimes) raised millions through public campaigns, including the famous March of Dimes that asked every American to send a dime to the White House.

Salk was one of several researchers racing to develop a vaccine. He was not the most famous. He was not the most credentialed. His rivals — notably Albert Sabin, who was developing a live-virus vaccine — considered him a second-tier scientist.

The Killed-Virus Gamble

Salk bet on the killed-virus approach he had learned from Thomas Francis. Most virologists believed that only a live (weakened) virus could produce lasting immunity. Salk disagreed. He believed that a virus that had been chemically killed (inactivated with formaldehyde) could still trigger an immune response — and without the risk of actually causing the disease.

Working at the University of Pittsburgh, Salk and his team spent years identifying polio virus strains, growing them in monkey kidney tissue, killing them with formaldehyde, and testing the results. The work was painstaking, dangerous (the lab handled live poliovirus), and urgent.

In 1953, Salk published preliminary results showing the vaccine’s promise. Then came the critical step: a massive field trial. In 1954, the National Foundation organized the largest medical experiment in history — 1.8 million children (called “Polio Pioneers”) were vaccinated or given a placebo. Thomas Francis Jr. oversaw the analysis.

The results, announced on April 12, 1955, showed the vaccine was 80-90% effective against paralytic polio. The nightmare was over.

”Could You Patent the Sun?”

Salk’s fame was instant and overwhelming. He received thousands of letters. He was invited to the White House. He was offered honorary degrees, awards, and lucrative corporate positions. President Eisenhower wept when he thanked him on national television.

But the moment that defined Salk’s legacy came in a television interview with Edward R. Murrow. When Murrow asked, “Who owns the patent on this vaccine?” Salk replied with words that have echoed for seventy years:

“Well, the people, I would say. There is no patent. Could you patent the sun?”

The vaccine was never patented. It was made available to the world. Some estimates suggest that had Salk patented it, he would have earned $7 billion. He did not care. His values — shaped by his Jewish upbringing, his immigrant parents’ emphasis on service, and his own moral compass — told him that healing was not a commodity.

The Jewish concept of tikkun olam — repairing the world — does not appear in Salk’s published statements. But it appears in everything he did.

The Salk vs. Sabin Debate

Salk’s killed-virus vaccine was not the end of the story. Albert Sabin — also a Jewish American researcher, born in Poland — developed an oral, live-virus vaccine that had significant advantages: it could be administered on a sugar cube (no needles), it was cheaper to produce, and it provided intestinal immunity that helped prevent transmission.

The Sabin vaccine eventually became the dominant vaccine worldwide, largely replacing the Salk vaccine for routine use. Sabin was sharply critical of Salk, and the rivalry between the two men was bitter. Sabin, a more traditional academic, resented the publicity Salk received and questioned his scientific rigor.

The irony is that both men were right. The Salk vaccine broke the back of the epidemic. The Sabin vaccine completed the job. Today, most countries have returned to using an updated version of the Salk (inactivated) vaccine, because the live Sabin vaccine carries a tiny risk of causing polio in rare cases.

The Salk Institute

In 1960, Salk founded the Salk Institute for Biological Studies in La Jolla, California. The building — designed by the architect Louis Kahn — is considered one of the masterpieces of twentieth-century architecture: two rows of concrete laboratories flanking an open courtyard that frames a thin channel of water pointed directly at the Pacific Ocean.

Salk wanted the institute to be a place where science and the humanities could intersect — where researchers would think not just about how things work but about what they mean. He recruited some of the finest minds in biology and continued his own research, focusing later in life on immunology, cancer, and HIV/AIDS.

Legacy

Jonas Salk died on June 23, 1995, in La Jolla, at the age of eighty. He never received the Nobel Prize — an oversight that many in the scientific community attributed to the fact that his vaccine was seen as applied rather than basic science, and to the lingering resentment of academic rivals.

He did not need a Nobel Prize. He had something more: the knowledge that hundreds of millions of children grew up without polio because of his work. The iron lungs were retired. The leg braces disappeared from playgrounds. The terror that had gripped parents every summer faded into memory.

A son of Jewish immigrants from the garment district of New York changed the world — and when the world offered him a fortune, he said no. Could you patent the sun?

You could not. And he would not.