This story was originally published by ProPublica.
Ever since he was a medical student, Dr. Neil Martinson has confronted the horrors of tuberculosis, the world’s oldest and deadliest pandemic. For more than 30 years, patients have streamed into the South African clinics where he has worked — migrant workers, malnourished children and pregnant women with HIV — coughing up blood. Some were so emaciated, he could see their ribs. They’d breathed in the contagious bacteria from a cough on a crowded bus or in the homes of loved ones who didn’t know they had TB. Once infected, their best option was to spend months swallowing pills that often carried terrible side effects. Many died.
So, when Martinson joined a call in April 2018, he was anxious for the verdict about a tuberculosis vaccine he’d helped test on hundreds of people.
The results blew him away: The shot prevented over half of those infected from getting sick; it was the biggest TB vaccine breakthrough in a century. He hung up, excited, and waited for the next step, a trial that would determine whether the shot was safe and effective enough to sell.
Weeks passed. Then months.
More than five years after the call, he’s still waiting, because the company that owns the vaccine decided to prioritize far more lucrative business.
Pharmaceutical giant GSK pulled back on its global public health work and leaned into serving the world’s most-profitable market, the United States, which CEO Emma Walmsley recently called its “top priority.” As the London-based company turned away from its vaccine for TB, a disease that kills 1.6 million mostly poor people each year, it went all in on a vaccine against shingles, a viral infection that comes with a painful rash. It afflicts mostly older people who, in the U.S., are largely covered by government insurance.
Importantly, the shingles vaccine shared a key ingredient with the TB shot, a component that enhanced the effectiveness of both but was in limited supply.
From a business standpoint, GSK’s decision made sense. Shingrix would become what the company calls a “crown jewel,” raking in more than $14 billion since 2018.
But the ability of a corporation to allow a potentially lifesaving vaccine to languish lays bare the distressing reality of public health vaccine creation. With limited resources, governments have long seen no other option but to team with Big Pharma to develop vaccines for global scourges. But after the governments pump taxpayer money and resources into the efforts, the companies get control of the products, locking up ownership and prioritizing their own gain.
That’s what GSK did with the TB vaccine. Decades ago, the U.S. Army brought in GSK to work on a malaria vaccine and helped develop the ingredient that would prove game-changing for the company. It was an adjuvant, a substance that primed the body’s immune system to successfully respond to a vaccine for malaria — and, the company would come to learn, a variety of other ailments.
GSK patented the adjuvant and took control of the supply of the ingredients in it. It accepted government and nonprofit funding to develop a TB vaccine using the adjuvant. But even though it isn’t carrying the vaccine to the finish line, it isn’t letting go of it entirely either, keeping a tight grip on that valuable ingredient.
As TB continued to rage around the globe, it took nearly two years for GSK to finalize an agreement with the nonprofit Bill & Melinda Gates Medical Research Institute, or Gates MRI, to continue to develop the vaccine. While the Gates organization agreed to pay to keep up the research, GSK reserved the right to sell the shot in wealthy countries.
The trial that will determine whether the vaccine is approved won’t begin until 2024, and isn’t expected to end until at least 2028. “We just can’t operate like that for a disease that is this urgent,” said Thomas Scriba, a South African scientist and TB expert who also worked on the study.
GSK pushes back against the premise that the company delayed the development of the TB vaccine and says it remains dedicated to researching diseases that plague underserved communities. “Any suggestion that our commitment to continued investment in global health has reduced, is fundamentally untrue,” Dr. Thomas Breuer, the company’s chief global health officer,
wrote in a statement.
The company told ProPublica that it cannot do everything, and it now sees its role in global health as doing early development of products and then handing off the final clinical trials and manufacturing to others. It also said that a vaccine for TB is radically different from the company’s other vaccines because it can’t be sold at scale in wealthy countries.
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