Study: DTaP Vaccine Is Causing Whooping Cough Resurgence

By Heather Callaghan

A study just published in BMC Medicine by Santa Fe Institute Omidyar Fellows Ben Althouse and Sam Scarpino used algorithms to see what caused a resurgence of whooping cough (pertussis) in the U.S. and UK.

It has now been openly declared that the DTaP vaccine is causing the uptick in whooping cough.

Out of the hypotheses, asymptomatic shedding was the final detectable problem. However, the authors have more to say on it, some of which sounds very contradictory coming from researchers who have proven that the mechanism of the acellular DTaP is, in part responsible for the spread of a dangerous bacterium.

Highlights, and this writer’s observations:

  • Researchers hypothesize 4 causes of whooping cough (pertussis) resurgence, zeroing in on low vaccine coverage and unvaccinated populations, failure of vaccine, microbial resistance, and asymptomatic shedding from newer, acellular vaccines.
  • Vaccinating individuals in close contact with infants too young to receive the vaccine (“cocooning” unvaccinated children) may be ineffective and prove negative.
  • It isn’t really explained how asymptomatic transmission accounts for infecting the vaccinated population and why even more vaccine coverage would help…
  • Authors claim that before a new vaccine is ready for clinical use, other options are necessary for reducing incidence, including vaccination of pregnant women.
  • According to Science Daily’s assessment which focuses on “anti-vaccine” sentiment, the authors vigorously want higher DTaP rates regardless, and present the information for policy and vaccine makers. Other outlets have implicated that a demand for safer vaccines in the 1990s caused the problem, but they dismiss death and injury associated with previous whole-cell vaccines. The burden of safety is to be on the manufacturers. 

In the end, more vaccination is called for despite the admission that whooping cough is being spread by the vaccine. 

The authors reveal that a newer model of the vaccine is in the pipeline. Just as before, the only time any fault is admitted on the part of a vaccine, there’s another one ready. Yet, lack of vaccination rates will always the focal point even when the vaccine is shown to spread that very disease – in the vaccinated population no less…

Excerpts from the study found here are reprinted with credit under a Creative Commons license:

Asymptomatic transmission and the resurgence of Bordetella pertussis

Authors: Benjamin M. Althouse and Samuel V. Scarpino


The recent increase in whooping cough incidence (primarily caused by Bordetella pertussis) presents a challenge to both public health practitioners and scientists trying to understand the mechanisms behind its resurgence. Three main hypotheses have been proposed to explain the resurgence: 1) waning of protective immunity from vaccination or natural infection over time, 2) evolution of B. pertussis to escape protective immunity, and 3) low vaccine coverage. Recent studies have suggested a fourth mechanism: asymptomatic transmission from individuals vaccinated with the currently used acellular B. pertussis vaccines.


Using wavelet analyses of B. pertussis incidence in the United States (US) and United Kingdom (UK) and a phylodynamic analysis of 36 clinical B. pertussis isolates from the US, we find evidence in support of asymptomatic transmission of B. pertussis. Next, we examine the clinical, public health, and epidemiological consequences of asymptomatic B. pertussis transmission using a mathematical model.

Results [emphasis added by H.C.]

We find that: 

1) the timing of changes in age-specific attack rates observed in the US and UK are consistent with asymptomatic transmission; 
2) the phylodynamic analysis of the US sequences indicates more genetic diversity in the overall bacterial population than would be suggested by the observed number of infections, a pattern expected with asymptomatic transmission;
3) asymptomatic infections can bias assessments of vaccine efficacy based on observations of B. pertussis-free weeks;
4) asymptomatic transmission can account for the observed increase in B. pertussis incidence; and
5) vaccinating individuals in close contact with infants too young to receive the vaccine (“cocooning” unvaccinated children) may be ineffective.

Conclusions [emphasis added by H.C.]

Although a clear role for the previously suggested mechanisms still exists, asymptomatic transmission is the most parsimonious explanation for many of the observations surrounding the resurgence of B. pertussis in the US and UK. These results have important implications for B. pertussis vaccination policy and present a complicated scenario for achieving herd immunity and B. pertussis eradication.

Extended Conclusion [emphasis added by H.C.]

That there has been a rise in whooping cough incidence in many countries around the globe is irrefutable. The findings presented in Warfel et al., in conjunction with ours, have profound implications for the understanding of B. pertussis transmission dynamics and for vaccination policy. Specifically, our results would explain the negative outcomes found in recent studies of postnatal cocooning [35], [36] and would further complicate efforts to achieve herd immunity and possible eradication [60]. Long-term solutions to B. pertussis vaccination are necessary, and new vaccines are in development [61], [62]. In the years before a new vaccine is ready for clinical use, other options are necessary for reducing incidence, including vaccination of pregnant women [63], [64] or potentially a switch back to wP vaccination as a priming dose [65]–[67].

Clearly, more research is necessary, but if our results hold, public health authorities may be facing a situation similar to that of polio, where vaccinated individuals can still transmit infection [68]. This suggests further modifications of recommendations to clinicians for protecting unvaccinated children [69] and ensuring that aP coverage remains high. Our results on the potential surveillance bias associated with B. pertussis incidence highlight a critical need for population-wide serological surveys to detect recent infection, studies to examine the genetic diversity of the B. pertussisbacterium, more detailed studies of the incidence rate in unvaccinated individuals, and increased active surveillance of attenuated symptomatic B. pertussis infections. In light of current evidence and our results, we cannot dismiss the potential far-reaching epidemiological consequences of asymptomatic transmission of B. pertussis and an ineffective B. pertussis vaccine.

Originally posted at Natural Blaze

Heather Callaghan is a natural health blogger and food freedom activist. You can see her work at and Like at Facebook.

Activist Post Daily Newsletter

Subscription is FREE and CONFIDENTIAL
Free Report: How To Survive The Job Automation Apocalypse with subscription

7 Comments on "Study: DTaP Vaccine Is Causing Whooping Cough Resurgence"

  1. Unfortunately the methodology in medical research and epidemiology means little to nothing in a paid for play environment for scientific journals without a peer reviews.

  2. Besides the just glaring f*cking hypocrisy and refusal to admit or ever wonder out loud whether vaccines do more harm than good, I’m wondering about their tacit admission that they don’t even really understand the “transmission dynamics” upon which the whole vaccine-edifice is built upon. If you don’t fully understand “transmission dynamics” how can you claim “herd immunity” as an outcome of vaccines? How can the herd EVER be immune if vaccines actually INCREASE the targeted virus? I don’t see the question raised, “how do we eliminate viral shedding” leaving me to think there is no way to prevent that, ergo, wtf good will a new vaccine do? Besides increase profits. Crazy.

  3. Its the perfect business model for Big Pharma. Create a vaccine that spreads the disease and create a pandemonium over the outbreak, attributing it to the un-vaccinated. This has to stop NOW. Its been going on for over 200 years now. Take a stand. History will remember what side of this argument the sold out politicians are on.

Leave a comment