Studies and Research
The body of research on the effects of intramuscular injections is vast and detailed. However, the highly technical language in these studies can be difficult for the general public to understand.
In public health research, authors often soften their wording due to pressure from journals to downplay negative findings on side effects and adverse reactions. As a result, important insights are frequently obscured or carefully phrased in the papers themselves—though they remain visible in the data sets and discussion sections upon close review.
To address this, HFDF has created this searchable compendium of studies, each paired with clear, plain-language summaries and notes prepared by our team. Our goal is to cut through technical complexity, bias, and ambiguity so individuals can access the key facts and make informed health decisions.
This resource will continue to grow, with new studies and improvements added regularly.
Please note that HFDF does not necessarily endorse or support any policy arguments or specific assumptions made by the authors. HFDF commentary describes and summarizes the role this study plays in the scientific discourse and provides abbreviated notes.
Recently Posted Studies
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Lessons learnt in Japan from adverse reactions to the HPV vaccine: a medical ethics perspective
Journal: Indian Journal of Medical EthicsLead Author:
Beppu et al.Original date of publication:
04/01/2017This scientific and policy review outlines the issues that arose in Japan due to vaccination with HPV, outlining conflicts of interest among approval officials, the raft of side effects, and the corruption of health care policy by pharmaceutical interests.
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Quadrivalent human papillomavirus vaccine and autoimmune adverse events: a case-control assessment of the vaccine adverse event reporting system (VAERS) database
This paper found that HPV vaccine increased the likelihood of autoimmune events, including ovarian damage, lupus, and IBS.
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Evidence of Increase in Mortality After the Introduction of Diphtheria-Tetanus-Pertussis Vaccine to Children Aged 6-35 Months in Guinea-Bissau: A Time for Reflection?
This paper in 2019 found troubling signals in which DTP-vaccinated children were significantly less likely to survive compared to those who didn’t receive it. Girls in that category were almost three times more likely to die.
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Acute encephalopathy followed by permanent brain injury or death
This study in the very mainstream Pediatrics journal outlines and reviews 48 cases of encephalopathy followed by brain damage and death after MMR vaccination or Measles vaccination alone
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Reanalysis of CDC data on autism incidence and time of first MMR vaccination
Lead Author:
Hooker, BS.Original date of publication:
12/01/2018This study found that black male kids who received MMR before 36 months were 4 times as likely to be diagnosed with autism. Retracted in one journal and republished in another.
