Search Results for "vaccines"

Sep 28 2015

Denier vs Skeptic

Published by under Skepticism

The AP has recently published an updated version of its Stylebook, which contains the following entry:

To describe those who don’t accept climate science or dispute the world is warming from man-made forces, use climate change doubters or those who reject mainstream climate science. Avoid use of skeptics or deniers.

This debate has been going on as long as the debate about the nature of recent climate change. This is more than a nitpick, as words have real meanings and they often reflect our understanding of an issue. Those who do not accept the current consensus of climate science would prefer they be referred to as “skeptics.” This has caused a problem for the skeptical community, because the majority of scientific skeptics accept the consensus of scientific opinion on anthropogenic global warming (AGW). They feel that AGW deniers are deniers and they taint the brand of “skeptic” by adopting that term.

There is, of course, a continuum of scientific acceptance without a sharp demarcation. Following Aristotle’s golden mean, I would place proper scientific skepticism as a virtue positioned between two extremes, with denial at one end and true-belief or gullibility at the other. This scientific continuum also does not capture the entire picture, as there are those who are anti-science or who follow non-scientific philosophies.

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41 responses so far

Sep 17 2015

Trump on Vaccines

I generally don’t cover purely political issues on this blog, but the second Republican primary debate from last night ventured into the area of vaccines and autism. Donald Trump has said in the past that he thinks the current “epidemic” of autism is caused by vaccines. He was challenged on this position during the debate, and face palms ensued.

Orac, perhaps presciently, gave a good recap of Trump’s anti-vaccine nonsense just yesterday. In 2007 Trump said:

“When I was growing up, autism wasn’t really a factor,” Trump said. “And now all of a sudden, it’s an epidemic. Everybody has their theory. My theory, and I study it because I have young children, my theory is the shots. We’ve giving these massive injections at one time, and I really think it does something to the children.”

That is pretty much exactly what Trump said during the second debate, almost word-for-word. This demonstrates several things about Trump, in my opinion. First, he feels comfortable forming his own opinions, based on nothing but casual observation and anecdote, even on complex scientific issues, without adequate information. The fact that the scientific community has come to an opposite opinion does not even seem to give him pause. Finally, he has learned exactly nothing on this issue over the last 8 years – nothing. He has added no depth or nuance to his position, let alone correcting his factual errors.

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23 responses so far

Sep 11 2015

How To Attack a Public Scientist

Published by under Skepticism

I have long held that one of the best ways to gauge the intellectual integrity of an individual or a group is to note how they deal with bad information or a bad argument that seems to support their position. You get points for rejecting an unsound argument or unreliable data even when it could be used to defend your side.

The flip side of this is acknowledging valid points that are on the other side of the argument. I will sometimes present what I feel is a rock-solid point for one side to an opponent, just to see how they will deal with it.

Of course it is far easier to point such behavior out in others, more difficult to police it in yourself. This is why constant reminders to value process, integrity, and fairness over any particular position is critical to skeptical inquiry.

Further, there is a range of bad responses to invalid points that can be exploited to support your position. In extreme cases ideologues will take the bad argument as total vindication. They will do a virtual victory dance, spike their fact in the end-zone, and turn up their self-righteousness to 11. Then you know you are dealing with someone with effectively zero intellectual integrity.

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74 responses so far

Aug 28 2015

French Court Awards Disability for Electromagnetic Hypersensitivity

Published by under Skepticism

A French court recently awarded a disability allowance ($912 per month for three years) to Marine Richard based upon her claim that she has EHS (electromagnetic hypersensitivity). This is a concerning development because EHS is likely not a real disease. The situation, however, is a bit more nuanced than it may at first appear.

EHS and Non-Specific Symptoms

First for some background on EHS (or Idiopathic Environmental Intolerance attributed to electromagnetic fields, IEI-EMF, as it is now called in the scientific literature) - sufferers claim that they are sensitive to electromagnetic fields and that these fields cause symptoms such as headaches, dizziness, nausea, fatigue, tingling sensation, or palpitations. In one case series of EHS specifically subjects reported:

The most frequently reported symptoms from exposure to smart meters were (1) insomnia, (2) headaches, (3) tinnitus, (4) fatigue, (5) cognitive disturbances, (6) dysesthesias (abnormal sensation), and (7) dizziness. The effects of these symptoms on people’s lives were significant.

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12 responses so far

Aug 24 2015

Antivaxxers Still Flogging Thimerosal

I gave a talk on the vaccine controversy over the weekend. I was not surprised that a couple of audience members had a lot of questions taken directly from anti-vaccine propaganda sites. What was interesting was that they were still pushing the idea that thimerosal, a mercury-based vaccine preservative, is linked to autism.

The reason this is interesting and illuminating is that the thimerosal hypothesis is not just mostly dead, it is most sincerely dead. It is pushing up the proverbial daisies.

A Brief History of Thimerosal

Thimerosal was developed as an organomercurial anti-microbial agent shortly after World War I. It was soon discovered that it has great anti-microbial properties and was well tolerated when injected into rabbits or rats even at high doses. This made it superior to anything else available at the time.

Bacterial contamination was a serious problem for vaccines in the first half of the 20th century. Thimerosal in tiny doses, well below safety limits, proved to be an effective agent for preventing contamination. By the 1940s thimerosal was being added to several vaccines for this purpose.

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38 responses so far

Aug 20 2015

The Myths of Vandana Shiva

Published by under Skepticism

Vandana Shiva is one of the loudest voices speaking out against GM (genetic modification) technology and modern agriculture. She is an ideologue and a crusader, which unfortunately means that she feels free to play loose with the facts and the science as long as it serves her narrative. Michael Specter did an excellent article about Shiva a year ago for The New Yorker. This quote puts much of Shiva’s propaganda into perspective:

“There are two trends,” she told the crowd that had gathered in Piazza Santissima Annunziata, in Florence, for the seed fair. “One: a trend of diversity, democracy, freedom, joy, culture—people celebrating their lives.” She paused to let silence fill the square. “And the other: monocultures, deadness. Everyone depressed. Everyone on Prozac. More and more young people unemployed. We don’t want that world of death.”

To her, GMOs are part of a world of death, while opposing GMOs is all about joy and freedom. She is anti-corporate, anti-West, anti-globalization, and anti-technology. Her campaign is largely one of lies and misinformation. She would also apparently rather have people starve than eat GMOs.

As reports:

Ten thousand people were killed and 10 to 15 million left homeless when a cyclone slammed into India’s eastern coastal state of Orissa in October 1999. In the aftermath, CARE and the Catholic Relief Society distributed a high-nutrition mixture of corn and soy meal provided by the U.S. Agency for International Development to thousands of hungry storm victims. Oddly, this humanitarian act elicited cries of outrage.

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517 responses so far

Aug 11 2015

Bishops Meddle in Health Care

The headline almost says it all: Catholic Bishops In Kenya Call For A Boycott Of Polio Vaccines. Catholic Bishops, or any religious officers, have no business meddling in public health care. NPR reports:

“the country’s Conference of Catholic Bishops declared a boycott of the World Health Organization’s vaccination campaign, saying they needed to “test” whether ingredients contain a derivative of estrogen. Dr. Wahome Ngare of the Kenyan Catholic Doctor’s Association alleged that the presence of the female hormone could sterilize children.”

Where did they get this idea? From conspiracy theories. That’s it. There is no medical or scientific reason, no credible investigative journalism, and no evidence to suspect that vaccine (the polio vaccine or any other) contain estrogen compounds that will sterilize children.

This is an old conspiracy theory in Africa, based on the idea that “The West” wants to sterilize Africans in order to control their population and keep them down. This is pretty typical fear mongering – based on fear from outsiders who wish the community harm. It is a form of mass delusion.

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16 responses so far

Aug 04 2015

Convincing Antivaxxers

A new study has been published in PNAS exploring methods for changing the attitudes of those who are anti-vaccine. The results differ from a previous study published last year in Pediatrics. Let’s explore their methods and results.

Both studies questioned subjects about their attitudes toward vaccines and their willingness to vaccinate their children. The Pediatrics study was web-based and recruited 1759 parents. They divided them into four groups:

(1) information explaining the lack of evidence that MMR causes autism from the Centers for Disease Control and Prevention; (2) textual information about the dangers of the diseases prevented by MMR from the Vaccine Information Statement; (3) images of children who have diseases prevented by the MMR vaccine; (4) a dramatic narrative about an infant who almost died of measles from a Centers for Disease Control and Prevention fact sheet; or to a control group.

The PNAS study was in person, but only recruited 315 subjects. They divided people into three groups: 1) given information debunking vaccine myths, 2) told about the risks of measles and shown graphic images, 3) control group given information unrelated to vaccines.

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19 responses so far

Aug 03 2015

The Holistic Doctor Murder Conspiracy

The antivaccine and CAM (complementary and alternative medicine) communities love a good conspiracy. When you live on the fringe of science and reason, conspiracy theories are your bread and butter. You need some reason to explain why the mainstream scientific community does not endorse your version of reality. It can’t be that the evidence doesn’t support your position, so it must be a conspiracy.

It is therefore no surprise that when a series of CAM practitioners die within a short period of time, antivaxxers see a conspiracy. A conspiracy would support their narrative so nicely, they just know it has to be true.

This story started with the death of Jeff Bradstreet, a “holistic” doctor who believed that vaccines caused his son’s autism. He was overtly anti-vaccine, supported the discredited mercury hypothesis of autism, and treated autism (including his son’s) with a variety of biomedical treatments including chelation therapy and hyperbaric oxygen.

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9 responses so far

Jul 06 2015

The New Seralini Study

Published by under General Science

Seralini, author of the infamous study alleging to show increased rates of tumors in rats fed GM food, the one that was retracted by the journal and then later republished in a separate journal, has published another controversial study.

The study, published in PLOSone, looks at the feed that is fed to lab rodents, the kinds used in GM research. They found:

All diets were contaminated with pesticides (1-6 out of 262 measured), heavy metals (2-3 out of 4, mostly lead and cadmium), PCDD/Fs (1-13 out of 17) and PCBs (5-15 out of 18). Out of 22 GMOs tested for, Roundup-tolerant GMOs were the most frequently detected, constituting up to 48% of the diet.

The implication is that all prior research looking at GMO and pesticide toxicity is now called into question because the control rodents would also have been fed a diet that contains some GMO, pesticides, and also heavy metal contaminants. The concept here is valid – control groups need to be proper controls. If you are testing the effects of a pesticide on rats, and the control rats are also getting the pesticide in their food, then the comparison is compromised. This would dilute out the effects of the test substance by increasing the background rate of tumors and other negative outcomes, the “noise” in the study. This would further mean that studies would have to be more powerful (contain more subjects in each group) in order to detect the diluted signal.

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11 responses so far

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