By Helen Petousis Harris 14/02/2017 18

As we enter a new year and school-based vaccination programmes get cracking the recycled crazy myths raise their ill-founded serpent heads again.

This week it is the notion that Gardasil causes infertility by inducing Primary Ovarian Failure/insufficient (POF). It is popping up on social media – again. The fact is that Gardasil does not cause infertility.

By infertility I refer to the claims of POF, which is a loss of normal ovarian function at a young age and can result in infertility. The condition affects about 1 percent of women before age 40.

If you have heard scary stuff and are a bit worried that Gardasil may put fertility at risk but you can’t be bothered reading further for the science, let me give you the short answer. No it does not. In contrast, it may just SAVE their fertility by preventing the need for invasive procedures that raise the risk for miscarriage or preterm birth, because it prevents cervical disease.

Here is my summary of the issue.

  • Some authors (with undisclosed conflicts of interest) have presented several case studies of young women who developed POF at varying time points following receipt of a dose of Gardasil.
  • They propose a biological mechanism that has not been scientifically established, in fact it is far-fetched, like Unicorns.
  • None of the extensive global vaccine surveillance systems have identified a signal for this condition following Gardasil.
  • In the large clinical trials the birth rate was the same in both vaccinated and unvaccinated which does not support that the vaccine caused infertility.

For those who would like the science, let me use the WHO causality assessment for Adverse Events Following Immunisation to address this myth. There are three questions to ask.

1. Can the given vaccine cause a particular adverse event?

Here we need to consider that there must be a temporal relationship. In other words the vaccine exposure must precede the occurrence of the event, but that is NOT enough on its own to answer this question. The association must reach statistical significance; there should be evidence that there is a dose relationship (more vaccine more events); the evidence should be consistent in that other studies in different settings using different methods return similar findings; the vaccine is the only cause of the event that can be found and finally; there is some biological plausibility. So, what have we got to suggest Gardasil causes infertility, or more specifically, POV, as the serpent heads are calling it?

Gardasil HPV Vaccine. Credit: melvil / Wikimedia.

The first single case of POI in association with HPV vaccine was published in 2012 by Little et al  with a two further cases following in 2014 from the same authors.  The first case experienced symptoms some undisclosed months (>5) after the third dose of vaccine. The second case ‘about’ a year after the third dose and the third case after the first period following the third dose. Call me cynical but that hardly fulfils the criteria above.

So what else have we got?

In 2013 a series of three cases was published by Colafrancesco et al. These six cases were then reviewed in a 2015 paper by Gruber and Shoenfeld, who for some reason do not note the time to onset of POI. For most of the cases the timing is inconsistent and more than a few months following the third dose. The authors associated the cases with a syndrome proposed by one of the senior authors, Yehuda Shoenfeld* called autoimmune/inflammatory syndrome induced by adjuvants (ASIA), or Shoenfeld’s Syndrome. No doubt this in an attempt to provide some kind of biological plausibility (I have discussed the extensive shortcomings of this previously ). What really stinks is that it appears Shoenfeld has a massive undisclosed conflict of interest in promoting his hypothesis as it would appear it may have been for the purposes of litigation. Sorry but the ASIA idea really does not fly.

I don’t want to be a complete party pooper and do concede that while an auto immune response is biologically possible and a syndrome “ASIA” has been proposed the hypothesis has not been accepted by the scientific community. No scientific evidence exists as to its validity. Among all the VAST post licensure studies of vaccines no evidence exists to support an association between these routinely used aluminium adjuvant containing vaccines and autoimmunity.

Still not seeing that this fulfils any causality assessment criteria.

Using a somewhat more scientific approach Pellegrino et al attempted to assess a potential association between POF and HPV vaccine using passive reporting data, with the denominator derived from an estimate of doses delivered. They assessed the reporting rates from the US, European and Australian passive reporting systems and found seven cases. They also evaluated the hospital discharges. Neither assessment revealed an increase in POF among the population exposed to HPV vaccine.  Regardless of the findings, I must point out for the gazillianth time, that the use of passive reporting data to assess causality is not appropriate. Spontaneous reporting is only signal generating and vaccine exposure cannot be assigned. However, the hospitalisation data is less prone to reporting bias. While these authors did not find an association, this evidence in totality is weak at best.

Therefore we have no evidence to show a causal relationship and weak evidence to reject a causal relationship.

While it is fair to say no evidence exists that indicates a risk for POF in vaccinated girls we cannot know, based on individual case reports, that the vaccine did not cause this event in these particular cases. This is where the next question comes in.

2. Did the vaccine given to a particular individual cause the particular event reported?

Firstly, like the above assessment, the vaccine must precede the occurrence of the event. Tick. In these case reports this did indeed appear to be the case, at least at some point. If the fact that the cases thus far described are ill defined and do not have consistent temporal onsets, with most occurring many months, sometimes years later, does not have you doubting then lets look for more definitive proof. This is where we really see those that peddle this theory working hard. They produce all manner of meaningless clinical and laboratory data. Screeds of it. Only problem is, it shows nothing. In fact what would you look for? What would you expect to see?

Let’s go back to the first question about “can it?” At the moment we have to reject a population level association because there is no evidence that there is an association. We have no reasonable biologically plausible reasons to think that Gardasil vaccine cases POF (None within the realms of science anyway). So what should we do next?

We should move on to consider alternative explanations. By not giving due attention to other possibilities then we are doing the patient no service.

Coincidental Adverse Events
Here is a list of possible other explanations listed in the WHO assessment guidelines. Perhaps some of these are more likely to have an association with the onset of POF than a vaccine?

  • pre-existing illness;
  • newly acquired illness;
  • spontaneous occurrence of an event without known risk factors;
  • emergence of a genetically programmed disease;
  • other exposures to drugs or toxins prior to the event;
  • surgical or other trauma that leads to a complication;
  • a manifestation of, or complication of, a coincidental infection that was present before or at the time of immunization, or was incubating, but was not apparent at the time of immunization.

Think about it.

Now here is what I believe is the clincher.

3. Will it?

There is no evidence to support a link between POF and Gardasil vaccine in the literature. In contrast, the pivotal clinical trials found no difference in the pregnancy rate between vaccinated and placebo groups. See below a table summarising. Oh, and just in case someone says ‘but it is the aluminium what is doing it and some of the placebos contained aluminium,’ consider that most of the world’s population have received vaccines containing tiny amounts of aluminium, the most common metallic element, you find it throughout our environment, in food and water including breastmilk. No sign of infertility.

Pregnancy Outcomes in the Phase III Program Database as of 11 Nov 2005.


There is no scientific evidence that Gardasil causes POF or infertility. On the contrary, the vaccine prevents cervical abnormalities that necessitate invasive procedures that can result in pregnancy complications.

*Yohuda Shoenfeld appears to have made up this syndrome and is a known anti vaccination proponent. He has testified in so called vaccine injury cases. His claims are not supported by either the scientific literature or the scientific community.  Professor of Law, Dorit Rubinstein Reiss provides a more comprehensive discussion

Featured image credit: Pan American Health Org / Flickr.

18 Responses to “HPV vaccine does not destroy fertility, it helps protect it”

    • Hi Wendy, it would indeed be terrible if your assertions about the safety or effectiveness of HPV vaccine were true. Fortunately they are not and we have robust scientific data to support both the HPV programme. Disease is already declining in countries who have a successful HPV vaccine programme. Safety monitoring is global and supports that this is an extremely safe vaccine. There are many myths about adverse events associated with the vaccine, many you have quoted. Public Health policy must be based on the best science available, not YouTube videos and personal opinions. If we did that then we would still be drinking dirty water.

      • do you realize the placebo was aluminum? and that 10 boys died during the case study… yoo would know that if you have research this properly…but yeh its safe and effective…

        • I am well acquainted on the formulation of the placebos. The use of aluminium adjuvant is entirely appropriate and is routinely used as a control in vaccine trials. There is about 80 years experience and accumulated safety data on aluminium adjuvants. If you think that the vaccine is somehow responsible for the death of 10 boys then it is evident you have not done your research properly. That is an utterly preposterous claim, one that requires some evidence. Perhaps you would like to provide that evidence?

      • Oh dear me. I suppose that’s why Japan is suing the vaccine maufactureres as are many other countries, Spain, Ireland etc. You want to risk your girls long term neurological health or even her life, go ahead, but many many thousands around the world have suffered and died from this vaccine. Here’s a Dr in Australia who actually did an in-depth investigation on the vaccine. You need to see the shocking truth in this talk given by Dr Deirdre Little. Truth and Gardasil: Doctor Discusses Premature Menopause in 16 Year Old After Gardasil Vaccine

        • Annie you are mistaken. Japan is doing no such thing, neither are others. While I applaud Dr Little for publishing her case in a journal this hardly qualifies as in-depth investigation. My argument is laid out in this blog and refers directly to Little’s case report and then outlines the evidence against an association. The online magazine you refer to is not a scientific journal, it is not even a forum for expert opinion. This topic has been considered by many experts who have spent their lives training in areas such as epidemiology and researching the safety of vaccines. Their conclusions, based on scientific data not anecdote, are unanimous.

        • Annie,
          Given extraordinary claims require extraordinary evidence, it would be great to know the source of your information for two claims in particular: (preferably scientifically reviewed sources rather then just opinion pieces and magazine articles if possible thanks)

          1. “Japan is suing the vaccine maufactureres as are many other countries, Spain, Ireland etc.” As far as i can see only individuals within these countries are trying to sue anyone
          2. “but many many thousands around the world have suffered and died from this vaccine”. Where is your scientific evidence which comprehensively shows causality between the vaccine and death and suffering. You referenced a video which links to an article which included 3 case reports , which might i add the author said in the publication herself “Case reports do not and cannot establish causation”. As Helen has mentioned in her other blog about placebos, it would be more constructive to “first defines the condition and provides a time frame following vaccination in which the event must occur in order to be caused by it. Then they could conduct an epidemiological study like real scientists do in order to investigate their hypothesis”

          What is your rationale and evidence also for the connection between premature menopause and Gardisal besides the click bait like clip you provided? “You need to see the shocking truth in this talk given by Dr Deirdre Little. Truth and Gardasil: Doctor Discusses Premature Menopause in 16 Year Old After Gardasil Vaccine”.
          It Would be interesting to see that too.

          • There seems to be a requirement for Helen to contact the North South magazine and correct the information regarding placebos and saline. The TGA has admitted that the placebos used in Protocol 018, tables 11 and 12, do not represent the contents stated in the trial data and will amend this. This was stated in 2015.The saline placebo, was not saline. Both the ‘saline placebo’ and the ‘non alum’ placebo contents will be corrected, to state what was used. You can verify this with the TGA.

    • Helen, you are either incredibly misinformed or deliberately attempting to misled others into taking a potentially catastrophic and avoidable risk. You have a public throne to sit upon, easily dismissing a myriad of victims into nonexistence when you could be using your position to raise truthful awareness. People like you drag this horror out.

      • You make an ad hominem attack yet provide no criticism of my argument, nor do you provide evidence to back your claims. Personal attacks do not contribute to constructive debate. Do you have any scientific evidence that indicates people have suffered harm related to this vaccine?

      • Hi Jenn,
        Helen is one of the best informed people I know about vaccines. She cares deeply about people. This is what sustains her passion in striving to protect us from a suite of infectious diseases and cancer. Can you tell me more about your sources of information and why you are not the misinformed individual?

    • Yes, absolutely. Actually I am going to write a separate blog about aluminium adjuvants that will address this question as it comes up a lot.

  • I could not disagree more with this post. I do not have the time to go bullet for bullet with the authors remarks but I will give him or her credit in an attempting to disillusion the readers.
    I will first start by pointing out that the notable story of the 16 yr old Australian girl diagnosed with POF following Gardasil was NOT the first known case. There have been several cases of girls reporting POF post Gardasil but these cases never hit mainstream media. Many of these cases go straight to the federal court of claims to try to receive compensation for their injury. The vaccine injury program is highly confidential. These cases don’t make the news and many families keep the injury out of the spot light for fear that their suit will be jeopardized and the victim will be ostricized, as was the case with the Meylor sisters. Now I will go into the facts that negate the authors “opinion” that Gardasil does not cause infertility and the ridiculous notion that it protects it.

    Fact #1- clinical trials = garbage in garbage out studies. The author cites that clinical trials of Gardasil revealed birth rates to be the same for patients who received the vaccine and for patients that did not. Well I think the author agrees that the argument is that infertility is caused by a certain aluminum adjuvant in Gardasil known as Aluminum hydroxylhosphate sufate (AAHS) . Not only does Mercks own data show adverse reactions from this adjuvant but Merck also admits that it used a placebo containing the same aluminum adjuvant with the exception of one very small control group who received a saline placebo that did not contain the aluminum adjuvant! So of course the so called placebo control group would experience the same fertility issues same the participants who received the vaccine.

    The clinical trails on Gardasil were extremely misleading! Not only did Merck use a placebo that wasn’t true to the FDAs definition of “placebo” but it also sliced and diced the data to make it appear as if the vaccine was safe. What they essentially did was combine the saline placebo group with aluminum placebo group to decrease the rate of adverse reactions suffered by the participants of the aluminum placebo group. Why use two different placebos? There’s justification for it.

    #2- aluminum is found in most vaccines and even some placebos. I think I already covered this a little bit above but I’ll explain further. Yes aluminum is a very common element and small doses are found in vaccines. However, the amounts and type of aluminum used by Merck is different. AAHS is an adjuvant used solely by Merck and has been shown to induce a much stronger immune response than other traditional adjuvants. Gardasil 9 now has DOUBLE the amount of aluminum than its predecessor. Since we’ve seen a sharp rise in infertility among young girls that had vaccine compared to other vaccines pre and post Gardasil 9. There was a study by a group in France that suggested more aluminum adjuvant is safer than using a lesser amount. The idea is that the body can rid more of the metal in larger quanties thus making it less toxic. The problem here is not just the toxicity of aluminum but its effect on the reproductive system. Regardless of how much the body rids, the traces left behind bind to hcg causing infertility.

    #3 the Reporting Data. Premature Ovarian Failure is pretty difficult to spot and diagnose in a young girl for the following reasons. 1. The marketing giants behind Gardasil target girls between the ages of 12 and 18. Girls within this age group are often on birth control to regulate periods and/or athletic so their cycles are irregular. One of the main symptoms and indicators of Premature Ovarian Faulure is cessation of menses. Unfortunately, the birth control masks these symptoms provoking an artificial menstrual cycle or if the girl is active she may have an irregular period. This in turn hides the true indicator that anything hormonal is going on. Sadly, months or even years can pass before a proper diagnosis is given which is why there is a lag in reporting POF and other infertility issues tied to Gardasil. 2. Ovarian Failure isn’t an emergency department type adverse reaction. You don’t have hot flashes or menopause like symptoms and go to the ER, even if you are a 16 yr old girl. Any of those that have been there or have teenage daughters know well that they can be HORMONAL and so the manifestations of POF are usually brought to the attention of the gyneocgoist that gave the vaccine in the first place and they for obvious reasons will not report the reaction.

    I am by no means anti-vaccine. Vaccines save lives but the risk vs reward for some vaccines must be taken into serious consideration. Years ago HPV was such an epidemic that you couldn’t find a tv station not airing a commercial about it. I even had friends and family that were diagnosed with HPV. Now I know more people who suffer from adverse reactions from the gardasil vaccine than I know people who suffer or suffered from HPV.

    If you are considering having this vaccine you should have all hormone levels tested before and after and be careful with taking any form of birth control since it’s been established that the BC masks certain symptoms. Unfortunately many petitioners have had their federal cases thrown out bc they’ve filed outside the statute of limitations due to the fact that it took over 3 yrs to identity and diagnose the infertility problem. This is all sad but very very true.

    • Dear anonymous person,

      Do you have a single piece of scientific evidence to back up anything you have laid claim to? This being a scientific forum and all.

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