Sister Teresa Forcades, Spain’s most provocative Catholic nun

A Nun and a Doctor, She’s One of Europe’s Longstanding Vaccine Skeptics

Sister Teresa Forcades, Spain’s most provocative Catholic nun, is at odds with governments, medical experts and even Pope Francis, who endorse the coronavirus vaccines. Pandemic denial groups are spreading her views

“How is it possible that they could force me to take a vaccine that I don’t want?” Sister Teresa Forcades said.
“How is it possible that they could force me to take a vaccine that I don’t want?” Sister Teresa Forcades said.Credit...Samuel Aranda for The New York Times
April 23, 2021

MONTSERRAT, Spain — Sister Teresa Forcades came to public notice years ago for her unflinching liberal views: an outspoken Roman Catholic nun whose pronouncements ran counter to the church’s positions on same-sex marriage and abortion.

She became a fixture on Spanish television, appearing in her nun’s habit to advocate independence for her native region of Catalonia, and to debate other hot-button topics, including vaccines. She had trained as a doctor, partly in the United States, and argued that vaccinations might one day pose a danger to a free society.

Now a decade later, with the coronavirus having swept the world, she believes that day is here. She is warning against the use of coronavirus vaccines, even as scientists and elected leaders worry that anti-vaccine sentiment could threaten Europe’s recovery from the pandemic.

“It’s always important that criticism is possible, to have dissenting voices,” she said of her views, which center as much on her doubts about the vaccines as her right to question them in public. “The answer cannot be that in the time of a crisis, society cannot allow the criticism — it’s precisely then that we need it.”

What she calls criticism, though, is seen by many in the scientific community as spreading misinformation. From her perch in a hilltop convent, Sister Teresa now finds herself at odds with governments, medical experts and even Pope Francis, who say vaccination campaigns are the only escape route from a pandemic that has killed more than three million people and ravaged global economies.

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In the world of vaccine skeptics, Sister Teresa, who was born in 1966 to a nurse and a commercial agent, is hard to categorize. She acknowledges that some vaccines are beneficial, but opposes making them mandatory. Her misgivings about coronavirus vaccines largely stem from her view that pharmaceutical companies are not to be trusted, and the clinical trials were rushed.

She draws credibility from her nun’s habit and medical training, which has made her especially appealing to conspiracy theorists and far right groups that seek to undermine public confidence in vaccines by spreading half truths that are sometimes mixed with facts, nuanced and delivered by people with credentials that give their voice the imprimatur of authority.

José M. Martín-Moreno, a professor of preventive medicine and public health in Spain who has been critical of Sister Teresa, said she cloaks her challenges to prevailing scientific wisdom under the guise of scientific debate and her right to criticize.

ImageA resident of a nursing home near Barcelona getting a second Covid-19 vaccine dose last month.
A resident of a nursing home near Barcelona getting a second Covid-19 vaccine dose last month.Credit...Samuel Aranda for The New York Times

This fight for public opinion couldn’t come at a more crucial hour.

The world is in the midst of an experiment without precedent — the rapid development and rollout of coronavirus vaccines, which have not yet stood the test of time, to a global population. There have been relatively few serious side effects, and the vaccines have proved highly effective in warding off severe illness and death. There is also evidence suggesting they prevent infections, likely slowing transmission.

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But the detection of rare, though sometimes fatal, blood clots in a small number of people who received the AstraZeneca and Johnson & Johnson vaccines has led some governments to pause or limit both shots — and to increased vaccine hesitancy.

In the Spanish capital, Madrid, in the days after the government raised the age threshold for the AstraZeneca shot over concerns about its effectiveness, only a third of people showed up for their vaccine appointments, officials said. The country is at the start of what appears to be a fourth wave of infections.

Despite her relative isolation in the convent, Sister Teresa’s message is increasingly reaching people across Spain.

A 120,000-member group in Spain known for far-right conspiracies often spreads her controversial advice about coronavirus treatments on the Telegram messaging app. Another popular group that even denies the existence of the pandemic recently praised a Facebook video in which she questioned the safety of coronavirus vaccines.

Sister Teresa, though staunchly leftist, doesn’t distance herself from right-wing followers, calling her distrust of some vaccines a “transversal question able to reach a wide spectrum of people.”


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Sitting in her convent on a recent day, she offered a window into her reasoning. She argued with data, some of it taken from clinical trials, but often arrived at a conclusion that few in the medical world accept: that corporations, driven by profits, cannot be trusted to deliver safe vaccines 

A view of the Sant Benet convent, where Sister Forcades lives.
A view of the Sant Benet convent, where Sister Forcades lives.Credit...Samuel Aranda for The New York Times

She said her views were shaped well before she became a nun, during a medical residency in the U.S. from 1992 to 1995. She recalled a patient in her Buffalo, N.Y., hospital who needed an amputation. After his limb was removed and he needed a prosthesis, the insurance company refused to pay for it.

“It was an example of brutality because it underlined a mix of economic interests and the basic human needs of health care,” she said.

In 1997, she returned to Spain and took a room at the Convent of Sant Benet Montserrat. The stone building sits in a pine grove under the Montserrat massif, which rises high above a valley outside Barcelona, in the northeastern region of Catalonia.

There, with time to think, she realized that her calling would be as a nun in a Benedictine order. She didn’t go on to practice medicine.

Soon, she was pushing the boundaries of religious scholarship. She helped develop theology that sought an equal role for women in Christianity and questioned interpretations of the Bible that favored men.


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But health care remained in her thoughts.

In 2006, she wrote a 45-page manifesto titled “The Crimes of Big Pharma.” Asserting that pharmaceutical companies were an enemy of public health, it used as an example a patent dispute between African governments and drugmakers over AIDS medication.

“I was in shock,” she said in the interview, because she had believed that pharmaceutical companies work for the good of humanity. 

Sister Teresa Forcades, a nun and a vaccine skeptic.
Sister Teresa Forcades, a nun and a vaccine skeptic.Credit...Samuel Aranda for The New York Times

Her mistrust of Big Pharma steadily deepened as other drugmaker scandals emerged, and she concluded that the push for profits was irreconcilable with public health.

Then in 2009, an outbreak of the H1N1 “swine flu” virus became a pandemic. Governments began discussing a mass vaccination campaign, and which corporations they might work with.

Sister Teresa spoke out against those efforts in an online video that received 1.2 million views and was translated into eight languages before Vimeo, the video-streaming platform, removed the channel where it was posted.

In the 55-minute broadcast, she appeared in nun’s habit and introduced herself as a physician. At first, she echoed established science, saying that the virus was less deadly than past flu outbreaks. Then she took a turn into conspiracy theory.


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She recounted an incident that year in which the health care company Baxter said it had mistakenly mixed two strains of flu in a laboratory, resulting in the deaths of test animals. Baxter, which later produced a swine flu vaccine, said that no one had been hurt, but experts said at the time that they were troubled by the mistake.

But in her mind, a lab mistake became something more sinister and suspicious: Sister Teresa, in the video, alleged without evidence that Baxter might have been trying to manufacture new viruses with the aim of profiting from potential vaccines, especially if their use became mandatory.

“How is it possible that they could force me to take a vaccine that I don’t want?” she said.

Transferring a coronavirus patient at the Hospital Clinic of Barcelona in November.
Transferring a coronavirus patient at the Hospital Clinic of Barcelona in November.Credit...Samuel Aranda for The New York Times

As the coronavirus began to spread across the globe last year, Sister Teresa said she felt that history was repeating itself.

“They have a series of secret contracts, at prices many times what they should be,” she said of companies producing the coronavirus vaccines.

Dr. Martín-Moreno, who has worked with the World Health Organization, shares her concerns about the contracts. He said that some frustration about the AstraZeneca coronavirus vaccine trials — whose results have been widely questioned for having used outdated information, among other issues — was merited.

But he added that Sister Teresa has gone too far and that her fame had become dangerous.

Sister Teresa argues that she poses no danger, and that her questions about vaccines, posed long before the pandemic, had simply come before their time.


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The thought sometimes frustrated her, she said in an email. “But then I remember Jesus and some of the saints I love and I feel in good company.”

Leire Ariz Sarasketa contributed reporting from Madrid.

Nicholas Casey is the Madrid bureau chief, covering Spain, Portugal and Morocco. He spent a decade as a foreign correspondent in Latin America and the Middle East and wrote about national politics during the 2020 U.S. presidential campaign. @caseysjournal