Lest we forget, vaccines are one of the greatest medical inventions of all time. Without them, we would see cemeteries filled with children who would have died before they were even five years old. In fact, the best evidence we have tells us that vaccines prevented 200 million cases of diseases in the USA alone in the five decades since 1963.
A recent study, published in AIMS Public Health, estimates that around 200 million cases of polio, mumps, rubella, measles, adenovirus, hepatitis A and rabies have been prevented in the U.S. from 1963 through 2015 as a result of widespread vaccination. The study, authored by Leonard Hayflick and S. Jay Olshansky, two leading experts on public health and infectious diseases, also discloses that about 450,000 deaths have been avoided in the U.S during this period, although other studies put that estimate of lives saved at a much higher number.
Dr. Hayflick discovered the human cell strain, WI-38, in 1962 which was critical to the safe manufacturing of vaccines, which became widespread in 1963. According to the article, the vaccines produced from the WI-38 cell line prevented almost 4.5 billion occurrences of the diseases, and stopped them from returning to infect us. Dr. Hayflick developed the foundation that allowed the world to have relative safe and very effective tools to prevent infectious diseases.
Prior to the development of WI-38, anti-virus vaccines were grown in monkey cells, which had some issues that made many question their safety, although most of the concern appeared to be overblown. However, once the WI-38 was available, it became easier to develop and produce vaccines for many viruses.
Drs. Hayflick and Olshansky wanted to see what effect that seminal event had on public health. And the numbers were incredible. Continue reading “Vaccines prevented 200 million cases of disease in the USA from 1963 to 2015”
Here we go again. Department of Health Services officials in Arizona have reported that 22 confirmed measles cases in the state associated with a Federal immigration detention facility. This Arizona measles outbreak has one source – Federal employees of that facility who refused to get vaccinated against measles.
We all know why people don’t vaccinate their children with the MMR vaccine against measles, mumps and rubella – the zombie myth that vaccines cause autism, which has been so utterly debunked that it gives new meaning to the word, debunked.
Let’s take a look at the root of the Arizona measles outbreak. I’m sure there are lessons to be had there.
Continue reading “Arizona measles outbreak – blame anti-vaccine employees”
The movie Vaxxed is an anti-vaccine polemic that claims, despite all of the high quality contradictory evidence, that there is a link between the MMR vaccine, for mumps, measles and rubella, and autism. Furthermore, it claims that the US government is engaging in a conspiracy to hide said link. Reviews of the film have appropriately emphasized the checkered past of its director, Andrew Wakefield, a discredited ex-scientist with a history of misrepresentations. Many of the reviews point out that Wakefield is not a credible source for information on vaccines.
In a recent video posted on the Vaxxed website, Andrew Wakefield took those claims head on, mounting a passionate defense of his reputation. If anything, however, this video further shows that Wakefield is not a good source of information.
The video’s claims range from unsupported (and implausible) to blatantly false. Unfortunately for Wakefield, Brian Deer meticulously documented each step in the events, making it relatively easy to identify the problems in these claims. Unfortunately for the rest of us, Wakefield’s adherents are unlikely to check his claims, and others may also accept his word without fact-checking. It’s therefore worth going through the claims.
To hear Wakefield, he was the victim of a conspiracy mounted because he dared raise safety concerns about vaccines. But as with his book, Callous Disregard (pdf), Wakefield’s claims are ill founded. In short, there are good reasons he lost his license and his reputation as a serious scientist.
A brief review of the history of this story – in 1998, Wakefield and co-authors published a paper suggesting that the measles component of the measles-mumps-rubella (MMR) vaccine caused changes in some children’s guts, and that those changes were associated with autism.
In 2007, after extensive investigation by Brian Deer published at The Sunday Times, Britain’s General Medical Council (GMC) opened an investigation of their own to answer the question: Did Wakefield engage in serious professional misconduct? In May 2010, the GMC found that yes, he did, and removed Wakefield from the British medical register (pdf).
Wakefield’s claims in the Allegations video can be put into three categories:
- there were no serious ethical violations or fraud in relation to the article he published in the Lancet;
- he’d done nothing wrong otherwise, measles outbreaks are not his fault, the GMC decision was generally wrong, and Walker-Smith’s acquittal shows that; and
- Brian Deer’s articles are a fraud motivated by a conspiracy.
None of these claims hold water.
Continue reading “Andrew Wakefield – dishonest attempt at self-justification”
There are so many silly memes that have arisen from the vaccine deniers, most of which have been thoroughly debunked. Everything from the well-worn (and worn-out) “vaccines cause autism” fable, which I have quashed here, to the “these diseases aren’t dangerous”, which, of course, couldn’t be farther from the truth.
One of the more annoying of the tales pushed by the vaccine refusers is that vaccines aren’t tested thoroughly before being used on unsuspecting infants. I do not know where this started, or why it started, but like much in the anti-vaccination world, it really doesn’t matter. It just passes from one person to another across google, and individuals with no research background hold this particular belief as if it were the Truth™.
Not only are vaccines thoroughly tested for safety and efficacy before being marketed, they also are rigorously tested in various combinations with other vaccines. And I’m not Cherry Picking a few articles to support my point of view, unless by cherry-picking you mean I’m picking the best articles from the highest quality journals in medicine.
Continue reading “Vaccines aren’t tested – myth vs. science (updated)”
Despite the continued social network misinformation about vaccine safety and/or effectiveness, the United States Centers for Disease Control and Prevention (CDC) has reported that the median vaccination coverage, amongst children between the age of 19-35 months was 94.7% for 2 doses of measles, mumps, and rubella (MMR) vaccine; 95.0% for varying local requirements for diphtheria, tetanus toxoid, and acellular pertussis (DTaP) vaccine; and 93.3% for 2 doses of varicella vaccine among those states with a 2-dose requirement.
The median total exemption rate was 1.8%, a difficult number to truly analyze. The CDC reported many issues like some parents get an exemption even after their children are fully or partially vaccinated, some exemptions are used as a matter of convenience because the parents forgot to vaccinated, and some states don’t report exemptions. Moreover, the CDC data indicates up to 15% of exemptions are “medical,” meaning that a child cannot receive a vaccine as a result of an establish medical contraindication.
Although these numbers fall near the 95% vaccination rate goal establish by the CDC’s Health People 2020, there is still a concern that clusters of unvaccinated or under-vaccinated children exist in many states and areas. Those locations become susceptible to outbreaks of vaccine-preventable diseases. Moreover, 26 states and DC failed to meet the 95% goal, so the disparity between vaccinated and unvaccinated groups remain large.
The research also shows that there have been no statistically significant changes in either vaccination or exemption rate from 2012-13. This is more statistical support that the antivaccination agenda is not gaining much traction across most of the USA.
Continue reading “2013-14 vaccine uptake in the USA is still high”
This article has been updated, and you can read it here. The comments section to this article have been closed, but you can comment at the newer version.
A few days ago, I wrote an article discussing how antivaccination trope inventors could not understand the most basic elements of mathematics in reading a vaccine label. They misinterpreted some simple math like that the toxic level of a substance is several million times higher than what is injected. I suppose in the minds of vaccine deniers, 1=1 billion. Or 1 trillion. Or 4783.2226. It just depends.
And if they can’t understand the simplest of math principles, assuming that they would understand population level statistics might be a really bad assumption.
Recently, I was pointed to an antivaccination article, on the Political Blindspot website, which is dedicated to finding news articles swept under the rug by mainstream media. My skeptical radar always goes into full energy mode whenever I see the word “mainstream.” Continue reading “Hey vaccine deniers–it’s just simple math. Part deux.”
This week, writer Aaron Carroll provided a graphic depiction of the toll of the antivaccination movement, which itself comes from a Council on Foreign Relations interactive map of “vaccine-preventable outbreaks” worldwide 2008-2014. I narrowed down the map to just include measles, mumps, and rubella, three diseases that can and are prevented by the MMR (or more commonly in the USA, MMRV, which includes chickenpox) vaccine.
Even though the vaccine deniers champion the trope that these diseases are “not serious,” real evidence from real infectious disease medical specialists say otherwise. Measles, mumps and rubella can be dangerous diseases with debilitating complications, including death, for both children and adults. And as you can see in the map (click on it for greater detail), outbreaks of measles (in red), mumps (in olive) and rubella (in blue) are larger than it should be in both the developed and the developing world than it should be, given the easy access to the MMR (or MMRV) vaccines. Continue reading “Measles, mumps, rubella outbreaks–the culpability of Andrew Wakefield”
For New Year’s Day, I’m republishing the top 10 articles I wrote in 2013. Well, actually top 9, plus 1 from 2012 that just keeps going.
#10. This article was published on 3 December 2013, and has had over 5000 views. It’s one of my favorite because it shows, with scientific evidence, that the trope pushed by the vaccine deniers that better sanitation, food, and medicine reduced the mortality from these diseases. But we know it’s the vaccines, and we have brilliant science to support that fact.
One of the tropes of the antivaccination world is that vaccines didn’t stop diseases. They give credit to everything from modern medicine to better food to better sanitation. Some of the credit they give is ironic since many vaccine deniers hate most aspects of modern medicine and believe that food was better 100 years ago. You can never get enough of the contradictions and hypocrisy of the antivaccine crowd.
I think it becomes easy to dismiss the value of vaccines in ending widespread disease because almost anyone writing today about vaccines has no memory of ubiquitous and deadly epidemics of diseases. We’re almost at a point in our culture that if Twitter doesn’t report it, it didn’t happen, so infectious diseases are something that happened back when humans lived in caves, prior to the advent of social media. I happen to have been born right near the end of widespread epidemics of infectious diseases, so I don’t remember any epidemics personally, though I recall a few classmates in high school who had a few effects from polio and other diseases. Culturally, we have forgotten our past with respect to diseases. Continue reading “Why we vaccinate–103 million cases of diseases averted since 1924”
There is an unscientific myth, pushed by some parts of the vaccine deniers (more accurate, vaccine delayers), that parents should delay vaccinations based on the unsupported belief that “too many vaccines” could overwhelm the child’s immune system. This belief is utterly unscientific and thoroughly debunked.
That belief is unfounded, as Paul Offit summarized in Addressing Parents’ Concerns: Do Multiple Vaccines Overwhelm or Weaken the Infant’s Immune System?:
Current studies do not support the hypothesis that multiple vaccines overwhelm, weaken, or “use up” the immune system. On the contrary, young infants have an enormous capacity to respond to multiple vaccines, as well as to the many other challenges present in the environment. By providing protection against a number of bacterial and viral pathogens, vaccines prevent the “weakening” of the immune system and consequent secondary bacterial infections occasionally caused by natural infection.
Continue reading “Delaying measles vaccination may increase risk of seizures”
The United States Centers for Disease Control and Prevention (CDC) has reported in the 2012 National Immunization Survey (NIS) that the majority of children, age 19-35 months, remained extremely high from 2008 through 2012, although there was a small, but statistically significant drop in uptake of some vaccines from 2011 to 2012. In addition, the CDC specified a substantial concern about clusters of unvaccinated children in widespread communities that are at risk from vaccine preventable diseases, and may pose a health risk to the community at large.
The study results were based upon a survey (cell and land-line phone calls with follow-up details from the health care provider) of about 16,000 children (an extremely large sampling for a survey). The data was then adjusted for racial/ethnic, income, and other population factors. Even though the CDC provided data from 2008-2012, the current method of polling was started in 2011, and only results from 2011 and 2012 are mathematically comparable.
Continue reading “Vaccination coverage in US children,19-35 months–uptake still high”